When at rest, the amount of air that enters and leaves the lungs in a normal respiratory cycle is the

A) total lung capacity.
B) vital capacity.
C) tidal volume.
D) residual volume.
E) inspiratory volume.


C) tidal volume.

Anatomy & Physiology

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Leather is made of the ________ layer of the dermis.

A. papillary B. collagen C. reticular D. keratin E. areolar

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Compare and contrast the roles of cytotoxic T cells and NK cells.

What will be an ideal response?

Anatomy & Physiology

The nodes of Ranvier are _______.

A) locations on the axon where the myelin sheath is very heavy B) locations on the axon where the myelin sheath is absent C) a type of glial cell D) trigger zones of an axon

Anatomy & Physiology

Normally, the systemic arterial blood has a Po2 of ________ mm Hg, a Pco2 of ________ mm Hg, and a pH of ________

A) 7.4; 40; 95 B) 40; 7.4; 95 C) 95; 40; 7.4 D) 95; 7.4; 40 E) 40; 95; 7.4

Anatomy & Physiology