ANAT 1502 Embryology Chapter 3

ANAT 1502 Embryology Chapter 3 - CH. 3 - 1st week of...

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CH. 3 - 1 st week of Development These will probably be most useful when looking at the diagrams in the book. Fertilization Ampulla - usual site of fertilization - longest and widest part of the uterine tube - * if not fertilized, oocyte moves to uterus, degenerates, and is resorbed - carbohydrate and protein-binding molecules on gamete surfaces are involved in sperm chemotaxis and gamete recognition, and process of fertilization. Phases of Fertilization -Sperm passes through the corona radiate of the oocyte -Acrosome of sperm releases hyaluronidase, which disperses the follicular cells of the corona radiate and allows the sperm to penetrate. -Penetration of Zona Pellucida -Acrosome enzymes: esterases, acrosin , and neuraminidase create pathway through zona pellucida to the oocyte. - Sperm enters zona pellucida zona reaction other sperm can’t enter -Sperm and Ooctye membranes fuse -head and tail of sperm enter but plasma membrane remains behind. -2nd meiotic division of oocyte, and female pronucleus formation.
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This note was uploaded on 11/21/2011 for the course ANAT 1502 taught by Professor Johnh.romfh during the Spring '10 term at Life Chiropractic College West.

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ANAT 1502 Embryology Chapter 3 - CH. 3 - 1st week of...

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