During which event are the primary germ layers formed?
A. Conception
B. Implantation
C. Gastrulation
D. Cleavage
E. Organogenesis
Answer: C
Anatomy & Physiology
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Which of the following are composed of myosin?
A) thick filaments B) thin filaments C) all myofilaments D) Z discs
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Each hemoglobin molecule contains _____ heme molecules, and each heme can carry _____ oxygen molecule(s)
Fill in the blank(s) with correct word
Anatomy & Physiology
The lumen of a hollow organ such as the stomach is considered to be part of the ________ environment.
A) external B) internal
Anatomy & Physiology
Which of the following forms the fetal portion of the placenta?
A. Embryoblast B. Chorion C. Amnion D. Yolk sac E. Allantois
Anatomy & Physiology