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Question

The muscles involved in breathing are

A
intercostal muscles
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B
diaphragm
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C
both a and b
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D
none of these
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Solution

The correct option is C both a and b
The diaphragm and a specialised set of muscles, called intercostal muscles present between the ribs are involved in the normal breathing in humans. They are involved in generating pressure gradient of air between the lungs and the atmosphere, so as to facilitate breathing.

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