The ___________ regulates digestive tract motility, secretion, and blood flow, and its neurons are found in the ____________.
A. autonomic nervous system; serosa
B. central nervous system; muscularis externa and muscularis mucosae
C. enteric nervous system; submucosa and muscularis externa
D. visceral sensory division; muscularis externa and submucosa
E. visceral motor division; mucosa and submucosa
Answer: C. enteric nervous system; submucosa and muscularis externa
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