Z3217015
Apparently it did not save when I answered the questions in the class, so here I go again.
1) What is the protein that sperm binds to on the surface of the egg? Zona Pellucida protein ZP3
2) Name the 3 stages of follicle development in the ovary? 1-Primordial follicle 2-Preantral follicle 3-Antral follicle
--Mitchell Mathieson 13:10, 6 August 2009 (EST)
1. What factor do the synctiotrophoblast cells secrete to support the ongoing pregnancy?
hCG - Human Chorionic Gonadotropin
2. What does the corpus luteum secrete to prevent continuation of the menstrual cycle? hCG - Human Chorionic Gonadotropin, which acts on the ovary, altering the secretion of oestrogen, and progesterone, altering menstrual cycle
3. What are the 2 main tissues to be derived from the germ cell layer continuous with the lining of the amniotic sac? Ectoderm, which forms nervous system tissue, and epidermis epithelia tissue types
--Mitchell Mathieson 13:14, 13 August 2009 (EST)