User:Z3220040

'''Lab 1''' 1. What is the protein that the sperm binds to??? ZP3

2. Name the 3 stages of follicular development??? Primary (primordial), Secondary (antral and preantral) and Preovulatory (Graffian).

--Joanne Raffel 13:12, 6 August 2009 (EST)

'''Lab 2''' 1. What factor do the synctiotrophoblast cells secrete to support the ongoing pregnancy??? Secretes hCG to initiate the release of progesterone to maintain the uterine wall.

2. What does the corpus luteum secrete to prevent continuation of the menstrual cycle??? Secretes progesterone to inhibit the menstrual cycle, which is facilitated by hCG which is released by the blastocyst.

3. What are the 2 main tissues to be derived from the germ cell layer continuous with the lining of the amniotic sac??? Ectoderm and endoderm --Joanne Raffel 14:39, 6 August 2009 (EST)