Question

7.What is peristalsis ?​

Answer 1

Answer:

peristalsis-

Peristalsis, involuntary movements of the longitudinal and circular muscles, primarily in the digestive tract but occasionally in other hollow tubes of the body, that occur in progressive wavelike contractions. Peristaltic waves occur in the esophagus, stomach, and intestines.

Explanation:

In much of a digestive tract such as the human gastrointestinal tract, smooth muscle tissue contracts in sequence to produce a peristaltic wave, which propels a ball of food (called a bolus before being transformed into chyme in the stomach) along the tract. Peristaltic movement comprises relaxation of circular smooth muscles, then their contraction behind the chewed material to keep it from moving backward, then longitudinal contraction to push it forward.

Earthworms use a similar mechanism to drive their locomotion,[1][self-published source?] and some modern machinery imitates this design.

The word comes from New Latin and is derived from the Greek peristellein, "to wrap around," from peri-, "around" + stellein, "draw in, bring together; set in order".

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Answer 2

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$⟼ \: \: \: What \: \: \: \: is \: \: \: peristalsis \: ? \:$

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⭐.the involuntary constriction and relaxation of the muscles of the intestine or another canal.

⭐ .creating wave-like movements that push the contents of the canal forward.

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$\bold\color{Orange}\boxed{\boxed{\mathtt{Definition}}}$

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Peristalsis is a series of wave-like muscle contractions,that moves food to different processing stations in the digestive tract.

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The strong wave-like motions of the smooth muscle in the esophagus carry the food to the stomach, where it is churned into a liquid mixture called chyme.

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