What is peristalsis?

A. a process of fat emulsification in the small intestine
B. smooth muscle contractions that move food through the alimentary canal
C. loss of appetite, fatigue, dehydration, and nervous disorders
D. the transport of nutrients to the liver through the hepatic portal vein
E. voluntary control of the rectal sphincters regulating defecation


Answer: B

Biology & Microbiology

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