Card 18 / 26: Of the following nuclei, which is the source of the preganglionic parasympathetic axons traveling with this cranial nerve?
A.)
Inferior salivatory nucleus.
B.)
Facial nucleus.
C.)
Superior salivatory nucleus.
D.)
Nucleus ambiguus.
E.)
Dorsal motor nucleus of vagus.
Answer:
C.) Superior salivatory nucleus.
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The nucleus ambiguus provides the motor innervation of all structures derived from the 3rd and 4th branchial arches. Lesions result in dysphagia and dysarthria.
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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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