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Definition
| The anatomically specialized, highly sensitive distal end of the penis |
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Definition
| A cell type in the Anterior pituitary that produces gonadotrophins. |
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Definition
| A substance produced by one or more glands that is transported by the blood to exert a specific effect upon another organ. |
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Definition
| A hollow funnel-shaped structure of passage. |
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Definition
| The insertion of one part into another. The insertion of the penis in the vagina. |
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Term
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Definition
| A lack of cyclicity brought about by nursing and presence of the young |
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Definition
| The process whereby granulosal and thecal cells are transformed into luteal cells. Brought about by LH |
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Definition
| The process by which luteal tissue undergoes regression and cell death |
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Term
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Definition
| The middle germ layer of the embryo |
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Definition
| A stage of the estrous cycle between ovulation and formation of the functional corpus luteum |
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Term
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Definition
| An epithelial lining or coating of a structure. |
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Term
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Definition
| A female that has had at least one previously successful pregnancy or parturition |
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Term
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Definition
| Cells within the mammary glands that have receptors for oxytocin and upon stimulation contract to cause milk ejection |
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Term
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Definition
| The smooth muscle layer of the uterus consisting of and inner circular layer and an outer longitudinal layer. |
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Term
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Definition
| The set of conditions whereby a hormone exerts an inhibitory effect on another gland or organ suppressing the level of hormone secretion. |
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Definition
| A reflex initiated by stimulation of sensory neurons that causes the release of a neurohormone from neurosecretory cells. |
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Term
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Definition
| A hormone that is synthesized and secreted by neurons. |
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Term
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Definition
| The oocyte after the first meiotic division in which the first polar body is present. |
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Term
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Definition
| Animals that produce eggs that are hatched outside the body of the ovulatory animal, as in birds. |
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Term
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Definition
| The functional cells of a gland or organ supported by a connective tissue framework. |
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Definition
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Term
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Definition
| The portion of the urethra inside the penis. |
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Term
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Definition
| A volatile material secreted externally that is recognized by the olfactory system. They stimulate or inhibit reproduction. |
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Term
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Definition
| The period of time during the day when there is daylight. |
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Term
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Definition
| The organ of the metabolic exchange between the fetus and the dam consisting of a portion of embryonic origin (chorion) and a portion of maternal origin (endometrium). |
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Term
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Definition
| The structural organization and physical relationship of the fetal membranes to the endometrium that provides the site of metabolic exchange between the dam and the fetus. |
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Term
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Definition
| Animals that display estrous cycles uniformly distributed throughout the year without marked seasonal influence |
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Term
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Definition
| A condition whereby a hormone exerts a stimulatory effect on another gland or tissue. |
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Term
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Definition
| Referring to the first parity or pregnancy of a female |
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Term
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Definition
| The stage of the estrus cycle between luteolysis and the onset of estrus. |
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Term
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Definition
| A developmental process in which the endocrine and morphological changes transform the animal into an individual capable of reproducing. |
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Term
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Definition
| Specific behavior in the female that promotes copulation. |
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Term
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Definition
| A period of anestrus induced by either long or short photoperiods. |
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Term
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Definition
| A condition in which females exhibit multiple estrous cycles during a specific season of the year. |
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Term
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Definition
| The process whereby spermatozoa are formed. Consists of proliferation, meiosis, differentiation. |
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Term
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Definition
| The male gamete consisting of a head (nucleus) and a tail (flagellum) that exhibits motility when exposed to the appropriate physiologic environment. |
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Term
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Definition
| A bone forming the floor of the cranium that houses the sella turcica into which the hypophysis fits. |
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Term
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Definition
| The fusion of the male and female pronuclei within the cytoplasm of the newly fertilized oocyte, giving rise to the zygote. |
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Term
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Definition
| The layer of flattened spindle-shaped cells just outside the basement membrane of an antral follicle with receptors to LH |
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Term
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Definition
| The diploid cell resulting from the fusion of the male and female pronuclei. |
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