HTHSCI 1H06 Study Guide - Final Guide: Corpus Luteum, Gonadotropin-Releasing Hormone, Folliculogenesis

• School: McMaster University
• Department: Health Sciences
• Course: HTHSCI 1H06
• Professor: Peter Helli

Document Summary

Oogonia are diploid stem cells that undergo rapid mitosis to form 2 million immature egg cells called primary oocytes. These primary oocytes are found in the cortex of the ovary in a dormant state; many degenerate by the time you hit puberty such that you are left with about 300 000. Enclosed by a single layer of squamous follicular cells. Each and every one of these primary oocytes become. Ovarian cycle = development of a few eggs every 28 days. Phase 1: follicular phase (variable in length; typically 14 days but can be longer) The transition from phase 1 to phase 2 is marked by ovulation! Follicular phase of ovarian cycle (predominantly driven by fsh and estrogen) Low levels of estrogen at the time of menstrual flow kick-starts the process. Low estrogen hypothalamus gonadotropin releasing hormone (gnrh) Gnrh anterior pituitary gland fsh (some lh)1. Primordial follicle primary follicle secondary follicle mature follicle.