The repolarization of the action potential involves the opening of
A. chemically gated Na+ channels.
B. voltage-gated Na+ channels.
C. chemically gated K+ channels.
D. voltage-gated K+ channels.
D
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The short projections at the distal ends of both the radius and ulna are the
A) styloid processes. B) radial head and ulnar head. C) radial head and olecranon. D) medial and lateral epicondyles. E) medial and lateral malleolus.
Which of the following statements is correct?
a. The right lung has two lobes, the left lung has three lobes. b. The apex of the lung rests against the diaphragm. c. The lungs are covered by the visceral pleura. d. All of the above are correct.
The smallest functional unit in the human body from a physiologic perspective is the:
a. nucleus b. atom c. cell d. tissue
This figure shows a left lateral view of the brain. What lobe does number 2 indicate?
A. Occipital B. Parietal C. Temporal D. Insula E. Frontal