List and describe the phases of embryonic development; from a zygote through gastrulation.  What happens after gastrulation?

What is the purpose of the placenta? Which part of the blastocyst eventually becomes the fetal placenta? In birds, developing chicks rely on the yolk sac to provide essential nutrients, but in humans, this is not the case. Why don’t we need it to provide nutrition? What is amniocentesis? How is it done?

Describe the process of egg production (oogenesis).

What are the three germ layers formed during gastrulation?

Whether the statement "Because of the many later developmental transformations that produce the elaborately structured organs, the body plan set up during gastrulation bears little resemblance to the body plan in the adult" is true or false.

Illustrate an egg in early cleavage, distinguish this stage from thise that follow (2,4,8 cell stages; collectively called as blastomere). Label

from fertilization through week eight of development, a conceptus is specifically called a: embryo, zygote, fetus, or infant.?

Identify major tissues and organs that arise from the ectoderm, the mesoderm, and the endoderm in an embryo.

What events occur during gastrulation? What are the locations of the three germ layers?

ARRANGE THE FOLLOWING EVENTS IN CORRECT SEQUENCE from 1-13: Penetration of the zona pellucida Cortical reaction 1st cleavage Acrosomal membranes rupture, and release their enzyme contents Penetration of the corona radiata Depolarization of egg membranes Migration of cortical cytoplasm to form gray crescent Sperm attach loosely on the zona pellucida Zona reaction Oocyte completes meiotic division    ZP3 tenaciously binds acrosome-intact sperm Release of Ca+2 in egg cytoplasm from its bound state Amphimixis