Q.

When the diaphragm contracts:

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a

Inhalation occurs

b

Exhalation occurs

c

There is not relation

d

None of the above

answer is A.

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Detailed Solution

When the diaphragm contracts, lungs volume increases, this causes the pressure to decrease. As the air move from high pressure to low pressure, hence the air moves inside the lungs which is inhalation.

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