Repro Lab Final
Order by
46 terms
Terms | Definitions |
|---|---|
 placentome | the specific anatomical region or zone of attachment between the fetal and maternal placenta |
| endoderm | lines blastocoele |
| blastomeres | totipotent daughter cells of cleavage divisions after early embryo is fertilized |
| inner cell mass | from which embryo and some extra-embryonic membranes arise |
| trophoblast | contributes to chorion, surrounds blastocele |
| blastocele | fluid-filled cavity |
| blastocyst | embryo with blastocele |
| gastrulation | from blastocyst to form three primary germ layers |
| nephrotome | portions of the intermediate and lateral plate of the mesoderm of the embryo form this, with the pronephros anteriorly and the metanephros posteriorly |
| pronephros | embryonic kidney; transient and degenerates, induces formation of mesonephros |
| mesonephros | embryonic kidney in birds and mammals- becomes vas deferens in male, regresses in female |
| genital ridges | develop from intermediate mesoderm; covered by peritoneal epithelium, but not actually in peritoneal cavity |
| metanephros | posterior portion of nephrotome; persists in the adult to form the kidney; metanephric ducts form the ureters |
| placenta | transient organ tha tprovides exchange between the condeptus and the dam; fetal component from chorion and maternal component from uterine endometrium |
| yolk sac | arises from primitive endoderm |
| chorion | arises from embryonic trophoblast |
| embryo | develops from ICM |
| uterine endometrium | layer of tissue that the dam contributes to the placenta |
| epitheliochorial | form of placenta found in sow and mare in which the endometrial epithelium is directly apposed to the epithelium of the chorion |
| endotheliochorial placenta | placenta form in dogs and cats in which the endometrial epithelium has completely eroded and the maternal capillaries are almost directly exposed to the chorionic epithelium |
| deciduate placenta | maternal tissue loss at parturition |
| indeciduate placenta | no maternal tissue loss at parturition |
| hemochorial placenta | a placenta with chorionic epithelium in direct apposition to pools of maternal blood |
| chorion | which extraembryonic membrane is vascularized? |
| between the mesonephros | where are the gonads located? |
| uric acid | precipitates in chick eggs so that allantois is not so necessary |
| cotyledonary | cow placenta |
| diffuse with microcotyledons and endometrial cups | mare placenta |
| endometrial cups | discrete raised areas in the gravid uterine horn of the mare that make eCG and slough from the endometrial surface during gestation |
| diffuse | sow placenta |
| zonary placenta | queen and dog placenta |
| discoid placenta | primate placenta |
| circulatory system | blood islands are precursors to |
| -180 C | what is the temp at which semen is frozen in liquid nitrogen? |
| cryoprotective agent | protects against intracellular ice formation before being frozen |
| eCG | has FHS-like activity, resulting in production of Graafian follicles |
| eCG | given to mice to produce more Graafian follicles |
| hCG | has LH like activity to result in ovulation |
| amantea (1914) | italian scientist that develop the earliest av for collecting dog semen |
| temperature and pressure | two most improtant characteristics to stimulate ejaculation in the bull |
| 45 C | temp of av |
| teasing | allowing bulls to mount another animal or dummy without ejaculating; stimulates repro tract and results in greater quantity and quality of colleced semen |
| albumin | carrier molecule that absorbs cholesterol from the surface membrane of sperm, weakening the membrane for capacitation |
| factory seal | pvc powder between two cotton plugs |
| monotocous | mammal that give birth to one animal at a time |
| atresia | degeneration and resrption of ovarian follicles before ovulation |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.