Peristalsis is not seen in?
Correct answer: A. Oral cavity
- A. Oral cavity
- B. Esophagus
- C. Small intestine
- D. Large intestine
Explanation
Peristalsis does not occur in the oral cavity. The oral cavity is the first part of the digestive tract, and it is where food is chewed and mixed with saliva. Peristalsis is a muscular contraction that occurs in the smooth muscle of the digestive tract. The smooth muscle in the oral cavity is not arranged in the same way as the smooth muscle in the rest of the digestive tract, so peristalsis does not occur.
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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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