User:Z3252083
From Embryology
Laboratory
--Mary Nicolas 23:38, 28 July 2010 (UTC)
Fertization- First diploid cell
--Mary Nicolas 23:37, 4 August 2010 (UTC)
1. Syncytiotropoblast cells secrete:
• Progesterone which maintains the integrity of the uterine lining. • Human chorionic gonadotropin (hCG) which prevents the degeneration of the corpus luteum. • Human placental lactogen (HPL) which modifies the metabolic state of the mother during pregnancy to facilitate the energy supply of the fetus