CAS BI 108 Study Guide - Quiz Guide: Zona Pellucida, Oocyte, Granulosa Cell
11 Nov 2016
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Document Summary
Medulla = ct, blood and lymph vessels and nerves, provides nourishment and support. Cortex = ovarian follicles covered by germinal epithelium: oogenesis: Mitosis of primordial germ cells within female embryos produces diploid oogonia (23 pairs of chromosomes), which duplicate their. Primary oocytes (23 pairs of duplicated chromosomes). Note that human females are born with all their potential ova as primary oocytes. At puberty, once each month, fsh stimulates one primary oocyte to undergo meiosis i, which gives rise to one: Secondary oocyte (23 duplicated chromosomes) and a polar body due to unequal cytokinesis. The secondary oocyte is then ovulated from the ovary (lh). If the secondary oocyte is penetrated by a sperm cell then meiosis. When and if meiosis ii is complete, a second polar body is separated from the large ovum (23 chromosomes). The haploid nuclei of the sperm and the mature ovum fuse: maturation of follicle:
