From Embryology
Revision as of 15:40, 6 August 2009 by Z3258567 (talk | contribs)


what is the protein that the sperm binds to on the surface

protein ZP2

name the three stages of follicle development in the ovary


--Sando Rashed 13:11, 6 August 2009 (EST)

  1.  What factor do the synctiotrophoblast cells secrete to support the ongoing pregnancy?
      they secrete proteolytic enzymes. they help the blastocyst into the endometrial wall, they also secrete hCG.
  2. What does the corpus luteum secrete to prevent continuation of the menstrual cycle?
     progesterone as well as estrogen
  3. What are the 2 main tissues to be derived from the germ cell layer continuous with the lining of the amniotic sac? 
     the endoderm and the ectoderm