Direct stimulation of neurons within the dorsal respiratory group would cause an increase in the frequency of action potential in the

A. intercostal nerves to internal intercostals muscles.
B. glossopharyngeal nerve that innervates the pharyngeal muscles.
C. intercostal nerves to external intercostals muscles.
D. phrenic nerve that innervates the diaphragm.
E. vagus nerve that innervates the smooth muscle of the bronchioles.


Answer: D

Anatomy & Physiology

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Fill in the blank(s) with the appropriate word(s).

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