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Select the correct events that occur dur...

Select the correct events that occur during inspration.
(a) Contraction of diaphragm
(b) Contraction of external inter-costal muscles
(c) Pulmonary volume decreases
(d) Intra pulmonary pressure increases

A

(A) and (B)

B

(C) and (D)

C

(A) ,(B) and (D)

D

Only (D)

Text Solution

Verified by Experts

The correct Answer is:
A
During inspiration contraction in the diaphragm and external inter-costal muscles the volume of pulmonary cavity increases. So, intra pulmonary pressure decreases.
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