The process of forming three germ layers from the embryonic disk is called ________.

A. gastrulation
B. fertilization
C. differentiation
D. meiosis
E. implantation


Answer: A

Anatomy & Physiology

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_______ nerves are composed of preganglionic sympathetic axons that did not synapse in a sympathetic ganglion

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Pectoralis major originates on the ________ and inserts in the intertubercular sulcus of the humerus

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