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Why is peristalsis necessary in the oesophagus?

Answer and explanation

Correct answer: To push food to the stomach

Peristalsis is the rhythmic, wave-like contraction and relaxation of muscles in the wall of the oesophagus. These involuntary waves push the swallowed food bolus downward, even when a person is not upright, until it reaches the stomach. Thus option A is correct. The oesophagus does not add light energy, filter food into blood, or direct food toward the lungs; those suggestions confuse separate body functions.

Related tags

PeristalsisOesophagusDigestionHuman-NutritionLife ProcessesWorld Of LivingScienceClass 10 Mcq

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