This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: 117 ANS 3319C Reproductive Physiology and Endocrinology Early Embryo Development Early Embryogenesis & Maternal Recognition of Pregnancy 1) Early developing embryo (Figs13-1 to 13-3) ♦ Ootid: female + male pronuclei • Largest single cell in body ♦ Zygote: single cell embryo that eventually divides ♦ _________________________________________________________________________ • ______________________________________________________________________ ♦ __________________ : > 32 individual blastomeres (unidentifiable) • Inner cells: develop gap junctions & groups of cells form • Outer cells: cell to cell adhesions called tight junctions ♦ Alters permeability of outer cells, fluid accumulation ♦ ____________________: two cell populations • ____________________________________________________________________________ • ____________________________________________________________________________ • Blastocoele: fluid filled cavity ♦ Hatching : blastocyst leaves protective zona • Result of several forces to degenerate zona ♦ Blastocyst growth & fluid accumulation: é pressure ♦ Enzyme production by trophoblastic cells: weakens zona ♦ Blastocyst contraction: intermittent pressure pulses • Post hatching ♦ _________________________________________________________________________ ♦ _________________________________________________________________________...
View Full Document
This note was uploaded on 11/23/2011 for the course ANS 3319C taught by Professor Yelich during the Fall '07 term at University of Florida.
- Fall '07