Question

4. Define the following terms.
(a) Peristalsis
(b) Mastication
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Answer 1

Answer:

A) Peristalsis is characterized by alternate contraction and relaxation, which pushes ingested food through the digestive tract towards its release at the anus.

B) Masticate is a technical word meaning to chew. The noun form of masticate is mastication, which refers to the act of chewing. Less commonly, masticate means to reduce to a pulp by crushing or kneading, as is done in the rubber-making process.

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Answer 2

(a) Peristalsis :-

Ingested food is send through digestive tract by contraction and relaxation towards it's release of anus.

(b) Mastication :-

Food cannot be swallowed directly.So it must be grinded , chewed and shreded. This process of grinding , chewing and shreding is called Mastication.