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प्रश्न
The swallowed food moves downwards in the alimentary canal because of ______.
पर्याय
force provided by the muscular tongue.
the flow of water taken with the food.
gravitational pull.
the contraction of muscles in the wall of food pipe.
MCQ
रिकाम्या जागा भरा
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उत्तर
The swallowed food moves downwards in the alimentary canal because of the contraction of muscles in the wall of food pipe.
Explanation:
The muscles of oesophagus gently push the food down to the stomach in a wave-like action (contractions and relaxations) called peristalsis. Actually, this movement takes place throughout the alimentary canal to push the food forward.
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