PSYC 342 Lecture Notes - Lecture 12: Endometriosis, Bulgarian Lev, Anovulatory Cycle
11 Mar 2013
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Document Summary
What is menstruation: monthly bleeding, menses , as a result of the shedding of the endometrium lining. Fsh acts on ovaries to promote devel- opment of follicles (maturing eggs of the female ovary: lh causes the mature follicle to release an egg. This is called ovulation: estrogen and progesterone, secreted by the ovary, build up the endometrium (the lining of the uterus) Follicular phase: between days 5 and 13 (but interindividual variations, otherwise known as the proliferative phase, stage ends with ovulation, main hormone controlling this stage is estrogen. Step 1: fsh + lh levels will begin to rise at the end of the menstrual period. These rising levels of fsh will causes ovarian follicles to start growing. Step 2: the granulose cells surrounding the follicles begin to proliferate and increase their expression of lut- enizing hormone (lh) receptors, these follicles also start producing estrogen.
