Card 17 / 26: This nucleus contributes axons to CN's IX and X. Which one of the following statements is true?
A.)
This nucleus has to do with the sensory innervation of the larynx and pharynx.
B.)
This nucleus contains cell bodies of axons that provide motor innervation to the infrahyoid muscles.
C.)
Neurons in this nucleus innervate striated muscles of the larynx and pharynx and are therefore critical for both phonation and swallowing.
D.)
This nucleus contains parasympathetic preganglionic cell bodies providing innervation to the smooth muscle in the pharyngeal and esophageal regions.
Answer:
C.) Neurons in this nucleus innervate striated muscles of the larynx and pharynx and are therefore critical for both phonation and swallowing.
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Right-O, old chap!! The postganglionic cell bodies for the vagus nerve are located in small ganglia in the wall of the organ.
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Ch 04: Spinal Cord General Anatomy & Brain Stem
Author:
M.D.Stephen VoronLecturer
University of Utah
USA
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