What is the biological term for the involuntary wave-like muscular contractions that push food along the human alimentary canal?
Answer and explanation
Correct answer: A. Peristalsis
- Step 1: Circular and longitudinal smooth muscles in the walls of the esophagus and intestines contract rhythmically. Step 2. This involuntary wave of contraction is termed peristalsis, propelling the food bolus forward. Answer: Peristalsis. Why not the others: Mastication is chewing; deglutition is swallowing; assimilation is the uptake and utilization of absorbed nutrients by cells.
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