The nerve that controls the diaphragm is the:

a. vagus
b. phrenic
c. celiac
d. superior mesenteric


Answer: b. phrenic

Anatomy & Physiology

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Which of the following is FALSE regarding single-unit smooth muscle cells?

A. They have many gap junctions between cells. B. They may have pacemaker activity. C. They have an individual neuron innervating each individual smooth-muscle cell. D. They exhibit tone. E. They may respond to stretch by contracting.

Anatomy & Physiology

The capillaries have an overall, tremendous cross-sectional area with a relatively fast flow rate

Indicate whether the statement is true or false

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The precursor to testosterone is

a. aldosterone. b. cortisol. c. dehydroepiandrosterone. d. estradiol. e. testosterone.

Anatomy & Physiology

Which of the following is a pivot joint?

A. Intercarpal and intertarsal joints B. The elbow and the interphalangeal joints C. The knee D. The joint between the dens and atlas E. The hip and shoulder joints

Anatomy & Physiology