How do the vestibular connections with the reticular formation affect the autonomic nervous system?
A. Vestibular connections with the reticular formation do not affect the autonomic nervous system.
B. Excessive activity of the circuits linking vestibular nuclei and the reticular formation may result in nausea, vomiting, and changes in consciousness.
C. Activity of the circuits linking vestibular nuclei and the reticular formation prevents any nausea, vomiting, and changes in consciousness.
D. Vestibular connections with the reticular formation calm the autonomic nervous system.
ANS: B
Rationale: The vestibular connections with the reticular formation, in addition to affecting the reticulospinal tracts, affect the autonomic nervous system. Excessive activity of the circuits linking vestibular nuclei and the reticular formation may result in nausea, vomiting, and changes in consciousness.
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