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Definition
| The neck of the uterus, which opens into the vagina. |
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Definition
| The fertilization of the egg by a sperm cell in humans. |
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| A secreting tissue in the ovary that forms from the collapsed follicle after ovulation and produces progesterone. |
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| New developing individual. |
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Definition
| The inner lining of the uterus, which is richly supplied with blood vessels. |
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Definition
| A coiled tubule located adjacent to the testes where sperm are stored. |
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Definition
| A type of reproductive cycle in all female mammals except higher primates, in which the nonpregnant endometrium is reabsorbed rather than shed, and sexual response occurs only during mid-cycle at estrus. |
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Definition
| The fusion of gametes that parents have discharged into the environment. |
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| A developing human from the ninth week of gestation until birth; has all the major structures of an adult. |
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| A period of sexual activity associated with ovulation. |
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| A microscopic structure in the ovary that contains the developing ovum and secretes estrogens. |
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Definition
| That part of the ovarian cycle during which follicles are growing and oocytes maturing. |
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Definition
| The process by which gametes are produced in the mammalian body. |
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| Pregnancy; the state of carrying developing young within the female reproductive tract. |
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Definition
| The male and female sex organs; the gamete-producing organs in most animals. |
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Definition
| A condition in which an individual has both female and male gonads and functions as both a male and female in sexual reproduction by producing both sperm and eggs. |
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Term
| human chorionic gonadotropin (HCG) |
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Definition
| A hormone secreted by the chorion that maintains the corpus luteum of the ovary during the first three months of pregnancy. |
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Definition
| Fertilization of ova in laboratory containers followed by artificial implantation of the early embryo in the mother’s uterus. |
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Definition
| Reproduction in which sperm are typically deposited in or near the female reproductive tract and fertilization occurs within the tract. |
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Definition
| A series of strong, rhythmic contractions of the uterus that expel a baby out of the uterus and vagina during childbirth. |
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Definition
| The continued production of milk. |
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Definition
| That portion of the ovarian cycle during which endocrine cells of the corpus luteum secrete female hormones. |
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Definition
| Exocrine glands that secrete milk to nourish the young. These glands are characteristic of mammals. |
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Definition
| The cessation of ovulation and menstruation. |
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Definition
| A type of reproductive cycle in higher female primates, in which the nonpregnant endometrium is shed as a bloody discharge through the cervix into the vagina. |
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Definition
| That portion of the uterine (menstrual) cycle when menstrual bleeding occurs. |
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Definition
| The process in the ovary that results in the production of female gametes. |
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Definition
| Ovary-specific stem cells. |
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Definition
| The cyclic recurrence of the follicular phase, ovulation, and the luteal phase in the mammalian ovary, regulated by hormones. |
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Definition
| In animals, the structure that produces female gametes and reproductive hormones. |
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Definition
| A tube passing from the ovary to the vagina in invertebrates or to the uterus in vertebrates. |
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Definition
| The release of an egg from ovaries. In humans, an ovarian follicle releases an egg during each uterine (menstrual) cycle. |
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Definition
| The female gamete; the haploid, unfertilized egg, which is usually a relatively large, nonmotile cell. |
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Definition
| A type of reproduction in which females produce offspring from unfertilized eggs. |
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Definition
| A structure in the pregnant uterus for nourishing a viviparous fetus with the mother’s blood supply; formed from the uterine lining and embryonic membranes. |
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Definition
| A diploid cell, in prophase I of meiosis, that can be hormonally triggered to develop into an ovum. |
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Definition
| That portion of the uterine (menstrual) cycle when the endometrium regenerates and thickens. |
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Definition
| A gland in human males that secretes an acid-neutralizing component of semen. |
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Definition
| A haploid cell resulting from meiosis I in oogenesis, which will become an ovum after meiosis II. |
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Definition
| That portion of the uterine (menstrual) cycle when the endometrium continues to thicken, becomes more vascularized, and develops glands that secrete a fluid rich in glycogen. |
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Definition
| The fluid that is ejaculated by the male during orgasm; contains sperm and secretions from several glands of the male reproductive tract. |
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Definition
| A gland in males that secretes a fluid component of semen that lubricates and nourishes sperm. |
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Definition
| A highly coiled tube in the testis in which sperm are produced. |
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Term
| sequential hermaphroditism |
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Definition
| A reproductive pattern in which an individual reverses its sex during its lifetime. |
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Definition
| A sac in the female reproductive system where sperm are stored. |
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Definition
| The continuous and prolific production of mature sperm cells in the testis. |
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Definition
| Stem cells that give rise to sperm. |
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Definition
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Definition
| The male reproductive organ, or gonad, in which sperm and reproductive hormones are produced. |
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Definition
| A female organ where eggs are fertilized and/or development of the young occurs. |
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Definition
| A tube that releases urine from the body near the vagina in females and through the penis in males; also serves in males as the exit tube for the reproductive system. |
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Definition
| Part of the female reproductive system between the uterus and the outside opening; the birth canal in mammals; also accommodates the male’s penis and receives sperm during copulation. |
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Definition
| The tube in the male reproductive system in which sperm travel from the epididymis to the urethra. |
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