Cell Bio Exam 2: Fertilization
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11 terms
Terms | Definitions |
|---|---|
Human Chorionic Gonadotropin | If fertilization occurs, blastocyst implants on day 20 and releases this hormone that prevents the corpus luteum from degenerating. |
Corona Radiata | an ovulated secondary oocyte with zone pellucida and follicular cells |
Mittelschmen Syndrome | Pain and slight bleeding into the peritoneal cavity at ovulation |
Anovulation | Inadequate release of fsh and lh. |
Misscariages | 1 in 5 due to insufficient progesterone. Lining of uterus cannot sustain pregnancy |
Capacitation | Glycoproteins and seminal proteins are removed from sperm & hours |
Acrosome reaction | When sperm first come into contact with the oocyte. Zona pellucida protein is the sperm receptor and is unique across species. membrane fusion. |
Cortical reaction | Plasma membranes of sperm and oocyte fuse. reaction is block to polyspermy. calcium pulse. |
Parthenogenesis | Embryonic development with out sperm |
Polyspermy | triploid zygote. 20% of spontaneous abortions. |
Thecal layer | Part of the follicle. Makes estrogens and androgens |
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