alleryStart learning →A person can swallow food even while standing on their head. Which action of the food pipe makes this possible?
ASucking by the lungs
BWave-like squeezing
CPull of gravity only
DFlow of saliva only
Answer & Solution
Correct answer: B. Wave-like squeezing
Rhythmic contraction and relaxation of the food pipe muscles, called peristalsis, pushes food along, so gravity is not needed.
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