The amnion

A. cushions and protects the embryo with fluid.
B. becomes the umbilical cord vessels.
C. is the fetal half of the placenta.
D. is the first site of blood cell formation.


Answer: A

Anatomy & Physiology

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What percentage of people have a complete cerebral arterial circle (circle of Willis)?

A. 20% B. 5% C. 45% D. 60% E. 85%

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Which bone is not part of the axial skeleton?

A.  Malleus B.  Sacrum C.  Clavicle D.  Atlas E.  Frontal bone

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Indicate whether the statement is true or false

Anatomy & Physiology