BIOC19H3 Lecture Notes - Lecture 10: Folliculogenesis, Vitellogenin, Ovarian Follicle
18 Nov 2016
School
Department
Course
Professor
Document Summary
The things that are on the right side of figure is what we need to know. Left side it is a many step zymogen activation pathway example is the one need for blood coagillation. There is a big time difference in these 2. Spermatogenesis occurs in the male and takes days. Oogenesis begins at the embryonic ovary and takes place over years. Start at the top with diploid cells. Estrogen: it is very important in maturation of sex organs. Progesterone: drop in this hormone induces labor. Ovary composed of cortex layer and medulla (inner layer) 5 stages on this diagram: primordial follicles, primary follicles, secondary follicle, vesicular follicle, ovulated oocyte. Mitosis begins at the embryonic stage of development. When enter meiosis 1, they are call primary oocytes. These primary oocytes become surrounded by somatic cells that are called pre-granulose and form primordial follicles. Primordial follicles are quiet for years until puberty.
