What is the number of covalent bonds that an atom of nitrogen can form within a molecule?

A. 1
B. 2
C. 3
D. 4


Answer: C

Anatomy & Physiology

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The cerebral arterial circle is an anastomosis of arteries around the

A. pons. B. frontal lobes. C. sella turcica. D. medulla oblongata. E. dural venous sinuses.

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The anatomic term for the cheek is

A. buccal.?B. pelvic.?C. cervical.?D. crural.?E. sacral.

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The epithelial layer that encloses the amniotic cavity is called the amniotic sac, or __________

Fill in the blank(s) with correct word

Anatomy & Physiology

Damage to the sustentacular cells of the testes could impair:

A) production of estrogens. B) spermatogenesis. C) oogenesis. D) FSH and LH production.

Anatomy & Physiology