A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
The premature termination of a pregnancy; may be induced or spontaneous (miscarriage)
Acquired immune deficiency syndrome (AIDS)
A fatal disease caused by a virus that destroys the immune system's ability to fight off infection
The packet of enzymes in a sperm's head that allows the sperm to dissolve a hole in the coating around the egg, which allows the sperm to penetrate and fertilize the egg
A chemical change that enables a sperm to penetrate an egg
Rubbery bands of scar tissue (usually caused by previous infections or surgery) attached to organ surfaces, capable of connecting, covering, or distorting organs such as the fallopian tubes, ovaries, or bowel. Adhesions in the fallopian tubes and ovaries obstruct the movement of sperm and oocytes.
The endocrine gland on top of each kidney
The bacterial organisms that require relatively high concentrations of oxygen to survive and reproduce
Agglutination of sperm
Occurs when sperm clump or stick together often due to infection, inflammation, or antibodies. This may occur when either man or woman develops immunity to the sperm; sometimes this is unexplained.
The absence of menstruation
The aspiration of amniotic fluid from the uterus, usually performed at three to three and one-half months of pregnancy, to test the fetus for genetic abnormalities
Bacterial organisms that survive in relatively low oxygen concentrations
Male sex hormones
A specialist who treats sperm problems
The absence of ovulation
A blood protein (immunoglobin) produced by white blood cells in response to the presence of a specific foreign substance (antigen) in the body, with which it fights or otherwise interacts. Antibodies to sperm, if present, can impair fertility by causing agglutination of sperm.
Any substance that induces the formation of an antibody
Antibodies produced by the immune system that mistake sperm for an invading substance and begin attacking them. These antibodies cause sperm to clump together, lose motility or lose the ability to fertilize an egg. They may he produced by either the male or female partner.
Artificial insemination (AI)
The introduction of sperm into a woman's vagina or uterus by noncoital methods, for the purpose of conception. The placement of large numbers of washed and concentrated motile sperm into the female reproductive tract, usually the uterus. (See also intracervical insemination, intrauterine insemination, intratubal insemination
Condition in which the sperm do not swim (move) at all or swim more slowly than normal.
Suctioning of fluid, as from a follicle
Without any symptoms
Antibodies formed against one's own tissues
An immune reaction against one's own tissues
Condition in which there are no sperm in the seminal fluid. This may be due to a blockage of transport of sperm or to an impairment of sperm production.
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Microscopic, single-celled organisms that can cause infections of the genital tract
Basal body temperature (BBT)
A woman's resting temperature upon awakening in the morning before any activity; the temperature rises slightly when ovulation occurs and remains at the higher level until the next menstruation. Recording and charting BBT is one of the oldest and most popular methods for predicting ovulation.
A fragment of tissue removed for study under the microscope
A fluid-filled sphere of cells developed from a zygote. The embryo develops from a small cluster of cells in the center of the sphere, and the outer wall of the sphere becomes the placenta. The blastocyst, also called a preimplantation embryo, begins to implant into the lining of the uterus 6 to 7 days after fertilization.
The barrier that separates sperm from the bloodstream
A synthetic compound that interferes with the pituitary gland's ability to secrete prolactin. Bromocriptine is often prescribed for hyperprolactinemia.
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a hollow tube used, for example, to inseminate sperm artificially
The process by which sperm become capable of fertilizing an egg
A flexible tube used for aspirating or injecting fluids
To destroy tissue with heat, cold, or caustic substances usually to seal off blood vessels or ducts
High-speed spinning device used during the processing and washing of sperm for artificial insemination or ART procedures. Separates sperm from the semen using centrifugal force.
The lower portion of the uterus that opens into the vagina
Mucus produced by the cervix that undergoes complex changes in its physical properties in response to changing hormone levels during the reproductive cycle. These changes assist the survival and transport of sperm.
Inflammation of the cervix
An STD caused by the bacteria Chlamydia trachomatis, which is frequently transmitted sexually between partners. In women, chlamydial infection accounts for 25 to 50 percent of the pelvic inflammatory disease cases seen each year. Chlamydia is the most common STD in the United States today.
Chorionic villus sampling (CVS)
taking a biopsy of the placenta, usually at the end of the second month of pregnancy, to test the fetus for genetic abnormalities
Genetic mutations involving changes in the number and structure of chromosomes. This can affect fertility through early fetal loss caused by genetic factors, impairment in the reproductive function in an adult caused by chromosomal abnormalities already present, or by genetic predisposition toward certain diseases, such as endometriosis.
A rod-shaped body in a cell nucleus that carries the genes that convey hereditary characteristics.
The stage of cell division that takes place immediately after fertilization and that lasts until the cells begin to segregate and differentiate and to develop into a blastocyst.
Clomiphene citrate (CC) (Clomid, Serophene)
A fertility pill that stimulates ovulation through release of gonadotropins from the pituitary gland. CC is a commonly prescribed fertility drug, primarily used in patients with oligomenorrhea to promote increased gonadotropin secretion and stimulation of the ovary.
Examination of the cervix through a magnifying telescope to detect abnormal cells
The mass of cells resulting from the earliest stages of cell division of a zygote.
A latex (rubber) device that fits over the penis to prevent pregnancy and sexually transmitted infections
Congenital Adrenal Hyperplasia
Condition that one is born with due to the lack of an enzyme needed by the adrenal gland. Normal products of the adrenal gland, therefore, are not produced; the body tries to stimulate the gland, and it enlarges (hyperplasia).
A birth defect.
Surgical removal of a cone-shaped portion of the cervix, usually as a treatment for a precancerous condition
A reason not to use a particular drug or treatment
Controlled Ovarian Hyperstimulation
Stimulation of the ovaries with various hormonal medications to develop as many ovarian follicles as possible and to control the timing of ovulation for egg recovery.
A gland that forms on the surface of the ovary at the site of ovulation and produces progesterone during the second half of the menstrual cycle, in order to prepare the uterus for a possible pregnancy. The corpus luteum regresses if pregnancy does not occur.
Cautery by freezing
The preservation of sperm, embryos, and oocytes by freezing them at extremely low temperatures. Cryopreserved embryos can he thawed and used in future cycles.
Undescended testes. Failure of one or both testicles to descend into the scrotum. Occurs when a testis is not in its normal position in the scrotum. It may he in the groin or abdomen.
Pouch located at the bottom of the abdominal cavity between the uterus and rectum
Examination of the internal female pelvic organs through an incision in the vagina
A sac filled with fluid
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A synthetic androgen frequently prescribed for endometriosis
Deoxyribonucleic acid (DNA)
The combination of amino acids in the cell's nucleus that make up the chromosomes, which transmit hereditary characteristics
A synthetic estrogen (originally prescribed to prevent miscarriage) that caused malformations of the reproductive organs in some who were exposed to the drug during fetal development
Dilatation and curettage (D&C)
An operation that involves stretching the cervical opening to scrape out the uterus
Eggs or sperm donated by individuals for medically assisted conception.
Artificial insemination with donor sperm
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pregnancy located outside of the uterus, most commonly in a fallopian tube
the female reproductive cell
donation of an egg by one woman to another who attempts to become pregnant by in vitro fertilization
the sperm-containing fluid released at orgasm
A two-part spinal reflex that involves emission, when the semen moves into the urethra, and ejaculation proper, when it is propelled out of the urethra at the time of orgasm.
the male ducts that contract with orgasm to cause ejaculation
Electrical stimulation of the nerve that controls ejaculation, used to obtain semen from men with spinal cord injuries.
Term used to describe the stages of growth from the second to the ninth week following conception. During this period cell differentiation proceeds rapidly and the brain, eyes, heart, upper and lower limbs, and other organs are formed.
The transfer from one woman to another of an embryo obtained by artificial insemination and lavage or, more commonly, by IVF.
A specialist in embryo development
The transfer of an in vitro fertilized egg from its laboratory dish into the uterus of a woman.
An organ that produces hormones
The microscopic examination of a sample of cells, obtained from the lining of the uterus between days 22 and 25 of a normal 28 day menstrual cycle, in order to evaluate ovulatory function.
A special type of ovarian cyst that is chocolate in color and contains endometrial cells that grow and bleed during menstruation
The presence of endometrial tissue (the normal uterine lining) in locations outside the uterus such as the fallopian tubes, ovaries, or the peritoneal cavity. Endometriosis can interfere with nearly every phase of the reproductive cycle and is a leading contributor to infertility in women. The causes and development of endometriosis are incompletely understood.
The inner tissue lining the uterus.
A coiled tubular structure in the male that receives sperm moving from the testis to the vas deferens. Sperm are stored and matured for a period of several weeks in the epididymis. Sperm acquire motility within the epididymis.
Infection of the epididymis, usually from an STD, such as gonorrhea, that can impair fertility during the course of the infection, as well as causing scarring that can partially or completely block sperm transport.
The principal estrogen produced by the ovary
A class of steroid hormones, produced mainly by the ovaries from puberty to menopause.
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Either of a pair of tubes that pick up the egg from the ovary and conducts it to the uterus. Fertilization normally occurs within this structure. Blocked or scarred fallopian tubes are a leading source of infertility in women.
the ability to become pregnant
Compounds used to treat ovulatory dysfunction. These include clomiphene citrate, human gonadotropins, bromocriptine, glucocorticoids, and progesterone.
The penetration of an oocyte by a sperm and subsequent combining (fusion) of maternal and paternal DNA.
The embryo becomes a fetus after approximately 9 weeks in the uterus. This stage of development lasts from 9 weeks until birth and is marked by the growth and specialization of organ function.
Fibroid (myoma or leiomyoma)
a benign tumor of the uterine muscle and connective tissue.
The finger-like projections at the end of the fallopian tube nearest the ovary that capture the egg and deliver it into the tube
A surgical procedure to correct a damaged or blocked fallopian tube.
The structure on the ovary surface that nurtures a ripening oocyte. At ovulation the follicle ruptures and the oocyte is released. The follicle produces estrogen until the oocyte is released, after which it becomes a yellowish protrusion on the ovary called the corpus luteum.
Follicle stimulating hormone (FSH)
The pituitary hormone that stimulates follicle growth in women and sperm formation in men
the pre-ovulatory phase of a woman's cycle during which the follicle grows and high estrogen levels cause the uterine lining to proliferate
Produced by the seminal vesicles, the sugar that sperm use for energy
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A reproductive cell. In a man, the gametes are sperm; in a woman, they are eggs, or ova.
Gamete intrafallopian transfer (GIFT)
A technique of medically assisted conception in which mature oocytes are surgically removed from a woman's body and then reintroduced, together with sperm, through a catheter into the fallopian tubes, where it is hoped fertilization will take place.
A bacteria that may cause a vaginal infection
The unit of heredity, composed of DNA; the building block of chromosomes
The fluid-filled sac in which the fetus develops, visible by an ultrasound exam
See Gamete Intrafallopian Transfer
An organ that produces and secretes essential body fluids or substances, such as hormones
Hormones naturally produced by the adrenal glands. Synthetic glucocorticoids are used to treat ovulatory dysfunction caused by adrenal disorders.
Organs that produce the sex cells and sex hormones; testes in men and ovaries in women .
Hormone that stimulates the testes or ovaries. Examples are follicle-stimulating hormone, human chorionic gonadotropin, human menopausal gonadotropin, and luteinizing hormone. These can be administered in cases of ovulatory dysfunction to directly stimulate the ovary.
Gonadotropin releasing hormone (GnRH)
The hormone released from the hypothalamus that causes secretion of gonadotropins from the pituitary gland.
An STD caused by the bacteria Nesseria gonorrhea. If the infection is not treated in women, it can spread to the uterus and the fallopian tubes, causing PID. In men, it can cause epididymitis and can affect semen quality.
A ball of inflamed tissue, commonly formed after vasectomy due to sperm leaking from the vas deferens
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Hamster oocyte penetration test
A test that evaluates the ability of human sperm to penetrate an ovum by incubating sperm with hamster oocytes that have had their outer layer removed. Normal sperm will penetrate the eggs. The reliability and significance of this test are controversial. Also called Hamster Zona-Free Ovum (HZFO) Test or Sperm Penetration Assay (SPA)
Condition in which blood appears in the semen and can usually he seen by the naked eye.
Hemizona assay (HZA)
A laboratory test of the ability of sperm to penetrate into a human egg; first the egg is split in half, then one half is tested against the husband's sperm and the other half against sperm from a fertile man
Excessive hair growth
a substance, produced by an endocrine gland, that travels through the bloodstream to a specific organ, where it exerts its effect
Host uterus procedure
a woman carries to term a pregnancy produced by an infertile couple through in vitro fertilization
cervical mucus that impedes the natural progress of sperm through the cervical canal
Human chorionic gonadotropin (hCG)
A hormone secreted by the embryo that maintains the corpus luteum to produce progesterone when pregnancy occurs. This hormone can be extracted from the urine of pregnant women and can be injected to stimulate ovulation and progesterone production.
Human menopausal gonadotropin (hMG)
Hormone that can be extracted from the urine of menopausal women and injected to stimulate ovaries and testes. See Pergonal
injection of fluid, often into the fallopian tubes to determine if they are open
excessive production of androgens in women, frequently a cause of hirsutism and also associated with polycystic ovarian disease (PCOD)
Excessive prolactin in the blood. The overproduction of the pituitary hormone prolactin, which can contribute to infertility. The causes of this condition are diverse and poorly understood. It can be treated with bromocriptine.
excessive stimulation of the ovaries that can cause them to become enlarged
A structure at the base of the brain that controls (among other things) the action of the pituitary gland. By secreting and releasing hormones, the hypothalamus orchestrates the body's reproductive function in both men and women. The endocrine gland at the center of the brain that produces gonadotropin releasing hormone and controls pituitary function
Underactivity of the thyroid gland
Surgical removal of the uterus
Examination of the inner cavity of the uterus through a fiber optic telescope inserted through the vagina and cervical canal
An x-ray study of the female reproductive tract in which dye is injected into the uterus while x rays are taken showing the outline of the uterus and the degree of openness of the fallopian tubes.
Direct visualization of the interior of the uterus in order to evaluate any abnormalities that may be present. This is done by inserting a hysteroscope (a long, narrow, illuminated tube) through the cervix into the expanded uterus. Surgical procedures may also be performed using this method.
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Resulting from the action of physicians. The term is commonly applied to diseases or disabilities caused by medical care.
Of unknown origin.
Occurs when no cause of infertility can he identified in either partner, yet pregnancy does not ensue.
the body's defense against any injury or invasion by a foreign substance or organism
Cause of infertility where either partner may he producing antibodies. Treatment options will depend on the type of antibodies present and on whether the female or male is producing them.
A class of proteins endowed with antibody activity; antibodies
A drug that interferes with the normal immune response
A medical treatment for an immune system disorder that involves transfusing donor white blood cells into a woman who has had recurrent miscarriages
Categorization of infertility used by demographers to describe couples who are non-surgically sterile, or for whom it would be difficult or dangerous to have a baby.
The process by which the fertilized oocyte (zygote) becomes attached to the wall of the uterus (endometrium), usually occurring five to seven days after ovulation
The complete or partial inability of a man to achieve or maintain an erection.
Cervix with the inability to remain closed throughout an entire pregnancy; a frequent cause of premature birth
Inability of a couple to conceive after 12 months of intercourse without contraception.
a response to some type of injury such as infection, characterized by increased blood flow, heat, redness, swelling, and pain
Intracervical insemination (ICI)
Artificial insemination technique in which sperm are placed in or near the cervical canal of the female reproductive tract, using a syringe or a catheter, for the purpose of conception.
Intracytoplasmic sperm injection (ICSI)
Direct injection of a single sperm into an egg
An artificial insemination technique in which sperm are introduced into the body cavity between the uterus and the rectum, after ovulation has been induced, for the purpose of conception.
Intratubal insemination (ITI)
Artificial insemination of sperm, which have been washed free of seminal fluid, into the fallopian tubes
Intrauterine device (IUD)
Contraceptive device inserted through the cervix into the uterine cavity.
Intrauterine insemination (IUI)
Artificial insemination technique in which sperm, which have been washed free of seminal fluid, are deposited directly in the uterine cavity.
while in the uterus during early development
Literally "in glass"; pertaining to a biological process or reaction taking place in an artificial environment, usually a laboratory.
In vitro fertilization (IVF)
A technique of medically assisted conception (sometimes referred to as "test tube" fertilization) in which mature oocytes are removed from a woman's ovary and fertilized with sperm in a laboratory. (See embryo transfer.)
Literally "in the living"; pertaining to a biological process or reaction taking place in a living cell or organism.
In vivo fertilization
The fertilization of an egg by a sperm within a woman's body. The sperm may be introduced by artificial insemination or by coitus.
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A photographic display or analysis of an individual's chromosomes that shows the number, size, and shape of each chromosome.
A chromosome abnormality that prevents normal male sexual development and causes irreversible infertility due to the presence of an extra female (X) chromosome
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Direct visualization of the ovaries and the exterior of the fallopian tubes and uterus by means of a laparoscope (a long, narrow, illuminated instrument) introduced through a small surgical incision below the navel, to evaluate any abnormalities. Surgical procedures may also be performed using this method.
A surgical incision through the abdominal wall, larger than that used in a laparoscopy, to allow visualization of reproductive structures for evaluation or surgery.
a benign tumor of the uterus
the cells in the testicles that make testosterone
the sudden release of luteinizing hormone (LH) that causes the follicle to release a mature egg
post-ovulatory phase of a woman's cycle; the corpus luteum produces progesterone, which in turn causes the uterine lining to secrete substances to support the implantation and growth of the early embryo
Luteal phase defect (LPD)
Failure of the endometrial lining of the uterus to develop properly after ovulation, due to inadequate function of the corpus luteum that may prevent a fertilized egg from implanting in the uterus or may lead to early pregnancy loss. This condition can be treated with progesterone.
Luteinized Unruptured Follicle (LUF) syndrome
the failure of a follicle to release the egg even though a corpus luteum has formed
Luteinizing hormone (LH)
the pituitary hormone that along with FSH causes the testicles in men and ovaries in women to manufacture sex hormones
Luteinizing hormone releasing hormone (LH-RH)
A hormone secreted by the hypothalamus that acts on the pituitary to promote secretions of gonadotropins that in turn direct hormone and gamete production by the ovaries and testes.
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Chemical substance or solution used to support the growth of cells (e.g., fertilized eggs).
the time when a woman has her first menstrual period
The cessation of the menstrual cycle, which occurs when the ovary is virtually depleted of oocytes.
The process of ovulation in which an oocyte matures each month in a follicle produced on the surface of the ovary. At ovulation, the follicle ruptures and the oocyte is released into the body cavity and enters the fallopian tube. If fertilization and implantation do not occur, the uterine lining is sloughed off, producing menstrual flow. The normal menstrual cycle is about 28 days.
an injectable drug consisting of pure follicle stimulating hormone used to stimulate ovulation
Fine, delicate surgical procedures performed with the aid of a microscope or other magnifying apparatus. In cases of infertility, microsurgery is used to repair fallopian tubes in women and blockages of the reproductive tract in men.
The study of form, such as assessing the shape of sperm during semen analysis
Motion, such as the forward swimming motion of health sperm
Secretion from a gland that can be watery, gel-like, stretchy, sticky or dry; fertile mucus is watery and stretchy
An infectious agent that falls structurally between a virus and a bacterium. A microorganism similar to bacteria, but lacking a rigid cell wall. Mycoplasma is associated with reproductive tract infections.
surgical removal of a uterine fibroid tumor
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Condition in which an abundance of dead sperm are found in the semen. However, sperm that are not moving are not always dead. Special stains have to be used to make this diagnosis.
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A physician who specializes in the treatment of female disorders and pregnancy
Scanty or infrequent menstruation, a problem found in about 20 percent of infertile women.
Condition in which the number of sperm in a semen sample is abnormally low.
Also referred to as an ovum, or the reproductive cell produced in the ovaries each month.
A woman who donates an ovum or ova to another woman.
a fluid-containing enlargement of the ovary
Inability of the ovaries to respond to any hormonal stimulation, often due to a postmenopausal condition.
Ovarian wedge resection
surgical removal of a portion of a polycystic ovary to produce ovulation
Paired female sex glands in which ova are developed and stored and the hormones estrogen and progesterone are produced.
The release of an oocyte from a woman's ovary, generally around the midpoint of the menstrual cycle.
Treatment of ovulation dysfunction caused by such disorders as amenorrhea, oligomenorrhea, and LPD, using drugs that induce ovulation. These so~called fertility drugs include CC and gonadotropins. Ovulation induction is also used as part of the Al, IVF, and GIFT techniques.
Ovulation prediction kits
Over-the-counter hormone monitoring kits that employ the enzyme-linked immunosorbent assay procedure to measure the mid-cycle increase in LH that indicates ovulation is taking place.
The female egg or oocyte, formed in an ovary.
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Removal of cells from the surface of the cervix to study microscopically
Open; for example, fallopian tubes should be patent after a sterilization reversal operation
The area surrounded by the pelvic bone that contains the uterus, fallopian tubes, and ovaries in women, and the prostate gland and seminal vesicles in men
Pelvic inflammatory disease (PID)
Inflammatory disease of the pelvis, often caused by an untreated STD. Bacteria that cause gonorrhea, chlamydia, or other infections can ascend from the lower genital tract through the endometrium (causing endometriosis), to the fallopian tubes (causing salpingitis), and possibly to the ovaries (causing oophritis).
A test of how fast sperm can travel up through cow mucus
The male organ of sexual intercourse
The luteinizing and follicle stimulating hormones recovered from the urine of postmenopausal women that is used to induce multiple ovulation in various fertility treatments
The endocrine gland at the base of the brain that produces the gonadotropin luteinizing hormone and follicle stimulating hormone, which in turn stimulate the gonads to produce sex cells and hormones
Polycystic ovarian disease/syndrome (PCOD/PCOS)
A disease of the ovaries caused by malfunction of the hormonal system that results in ovaries clogged with cysts, making ovulation almost impossible. This is characterized by multiple ovarian cysts and increased androgen production.
A growth or tumor on an internal surface, usually benign.
Microscopic analysis of cervical mucus within a few hours of timed intercourse in order to observe and evaluate the interaction of sperm, semen, and cervical mucus. The oldest and most widely practiced postcoital test is the Sims -Huhner test.
A fertilized egg in the early stage of development prior to cell division
The first 14 days of a woman's menstrual cycle, when estrogen levels are rising before ovulation takes place.
Infertility in those who have never had children.
The female hormone, produced by the corpus luteum after ovulation, that prepares the uterine lining for implantation of a fertilized egg and helps maintain the pregnancy
A hormone secreted by the pituitary that stimulates breast milk production and supports gonadal function.
The male gland encircling the urethra that produces one third of the fluid in the ejaculate
a group of hormone-like chemicals that have various effects on reproductive organs; so named because they were first discovered in the prostate gland
Condition in which the presence of white cells in the semen indicates possible infection and/or inflammation.
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An Ob-Gyn who specializes in the treatment of hormonal disorders that affect reproductive function
An Ob-Gyn or urologist who specializes in the surgical correction of anatomical disorders that impair reproductive function
Ejaculation of seminal fluid backward into the bladder instead of forward through the urethra.
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Surgical removal of the fallopian tubes
Inflammation of one or both of the fallopian tubes, sometimes caused by PID.
Salpingitis isthmica nodosa
an abnormal condition of the fallopian tube where it attaches to the uterus, characterized by nodules
A surgical attempt to recreate the normal fallopian opening and fimbria function in cases of complete occlusion of the fallopian tubes. An incision in a fallopian tube, such as to remove an ectopic pregnancy.
an operation to open a blocked fallopian
the sac containing the testicles, epididymis, and vas deferens
Infertility in those who have previously been fertile.
A fluid consisting of secretions from the male's seminal vesicles, prostate, and from the glands adjacent to the urethra. Semen carries sperm and is ejaculated during intercourse. Only a small part of the visible ejaculate (semen) comes from the testicle.
Evaluation of the basic characteristics of sperm and semen, such as appearance, volume, liquefaction and viscosity, and sperm concentration and motility. The presence of bacterial infection and immunological disorders can also be determined by semen analysis. It is the fundamental diagnostic method used to evaluate male infertility.
Two pouch-like glands located above the prostate that produce seminal fluid and fructose, which make up the majority of fluid expelled during ejaculation.
The network of tubes where sperm are formed in the testis.
A wall that divides a cavity in half, such as a uterine septum
The cells in the testicles that provide nourishment to the early sperm cells
The inability to achieve normal sexual intercourse for reasons such as impotence, premature ejaculation, and retrograde ejaculation in the man or of vaginismus in the woman.
Sexually transmitted diseases (STD's)
Infectious diseases transmitted primarily by sexual contact, including syphilis, gonorrhea, chlamydia, herpes, and acquired immunodeficiency syndrome.
The male reproductive cell, or gamete. Normal sperm have symmetrically oval heads, stout midsections, and long tapering tails.
A place in which sperm are stored by cryopreservation in liquid nitrogen for future use in artificial insemination.
The number of sperm in the ejaculate (when given as the number of sperm per milliliter it is more accurately known as the sperm concentration or sperm density)
Sperm penetration assay (SPA)
see Hamster test
The separation of viable sperm from the overall sperm population of an ejaculate for the purposes for intrauterine inseminations and ART procedures.
an agent that kills sperm
The ability of a sperm to move normally.
The dilution of a semen sample with various tissue culture media in order to separate viable sperm from the other components of semen. (See Sperm Preparation)
Spinal cord injuries
Injury to the spinal cord causes fertility problems in paraplegic and quadriplegic men, although not generally in women. Because of these conditions sperm quantity and quality may be decreased, there may be erection and ejaculation dysfunction, and infections of the reproductive tract may occur.
a surgical procedure (such as tubal ligation or vasectomy) designed to produce infertility
a surgical procedure used to undo a previous sterilization operation and restore fertility
stimulation of multiple ovulation with fertility drugs; also known as controlled ovarian hyperstimulation (COH)
a woman who becomes artificially inseminated with a man's sperm and carries the pregnancy for an infertile couple (the man being the biological father of the child), with the intention of relinquishing the child at birth.
Surrogate gestational mother
A woman who gestates and carries to term an embryo to which she is not genetically related, with the intention of relinquishing the child at birth.
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Also known as the testicles, the paired male sex glands in which sperm and the steroid hormone testosterone are produced.
the male gonad; produces sperm and male sex hormones
The excision of a small sample of testicular tissue for microscopic evaluation to determine sperm production.
Condition in which the testicle twists on itself, cutting off its own blood supply; it occurs most commonly in adolescents. Surgical correction is necessary as soon as possible to save the testicle. It is associated with excruciating testicular pain.
Occurs when the testes do not produce a normal number of mature sperm and when the hormones needed for normal sperm production (LH, FSH) are abnormally elevated.
The primary male sex hormone. A steroid hormone, or androgen, produced in the testes that affects sperm production and male sex characteristics.
the endocrine gland in the front of the neck that produces thyroid hormones, which regulate the body's metabolism
A drug that relaxes smooth muscles and therefore interferes with uterine contractions; frequently used to stop premature labor
Total effective sperm count
an estimate of the number of sperm in an ejaculate capable of fertilization; total sperm count X percent motility X percent forward progressive motility X percent normal morphology
a poison produced by a living organism, such as by some bacteria
The sterilization of a woman by surgical excision of a small section of each fallopian tube.
plastic or reconstructive surgery on the fallopian tubes to correct abnormalities that cause infertility
an abnormal growth of tissue that can be benign or malignant (cancerous)
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The use of high-frequency sound waves focused on the body to obtain a video image of internal tissues, organs, and structures. Ultrasound is particularly useful for in utero examinations of a developing fetus, for evaluation of the development of ovarian follicles, and for the guided retrieval of oocytes for IVF and GIFT
A microorganism similar to Mycoplasma
The tube through which urine from the bladder is expelled
A physician who specializes in the surgical treatment of disorders of the urinary tract and male reproductive tract
The womb; female reproductive organ that nourishes the fetus until birth
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The female organ of sexual intercourse; the birth canal
Involuntary contraction of the muscles around the outer third of the vagina, prohibiting penile entry.
Inflammation of the vagina
An abnormal twisting or dilation of the vein that carries blood from the testes back to the heart; a varicose vein of the testis. Blood flows in an abnormal direction in these veins toward the testicle rather than the normal direction, which is always toward the heart. Elevated scrotal heat results. It occurs most commonly on the left side.
The convoluted duct that carries sperm from the testis to the ejaculatory duct of the penis. Tubal structure that connects the epididymis with the seminal vesicles. Vasectomy
Sterilization of a man by surgical excision of a part of the vas deferens.
Surgical repair of a previous vasectomy for a man who wants to regain his fertility
An x-ray examination of the vas deferens by injection of dye through a small incision. X rays are taken giving an outline of the sperm transport system.
See Sexually transmitted diseases (STD)
Capable of living.
A microscopic infectious organism that reproduces inside living cells
Thickness of the semen
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The protective coating surrounding the egg
A fertilized oocyte formed by the fusion of egg and sperm, containing DNA from both.
Zygote Intra Fallopian transfer (ZIFT)
In vitro fertilization with a transfer of the zygote into the fallopian tube; a combination of in vitro fertilization (IVF) and gamete intrafallopian transfer (GIFT).
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List of abbreviations
Basal body temperature
Controlled ovarian hyperstimulation
Follicle stimulating hormone
Gamete intrafallopian transfer
Gonadotropin releasing hormone
Human chorionic gonadotropin
Human immunodeficiency virus
Human menopausal gonadotropin
Intracytoplasmic sperm injection
Luteinizing hormone-releasing hormone
Luteinized unruptured follicle syndrome
Microsurgical epididymal sperm aspiration
Ovarian hyperstimulation syndrome
Polycystic ovarian syndrome
Percutaneous epididymal sperm aspiration
Pelvic inflammatory disease
Partial zona dissection
Reactive oxygen species
Round spermatid injection
Sperm penetration assay
Sexually transmitted disease
Subzonal sperm injection
Testicular fine needle aspiration
Testicular sperm extraction
Therapeutic insemination with donor
White blood cell
Zygote intrafallopian transfer