The propulsive movement of the gastrointestinal tract (GI tract) is:
Correct answer: A. Peristalsis
- A. Peristalsis
- B. Epiglottis
- C. Antiperistalsis
- D. Anus
- E. None of these options
Explanation
Peristalsis is the contraction of muscle tissue that helps move and break down foodstuffs. The walls of the alimentary canal include layers of smooth muscle controlled by the autonomic nervous system. The alternating contraction and relaxation of these muscles is called peristalsis.
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About Digestion
The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
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