Question
Biology Question on Mechanism Of Breathing
Select the correct events that occur during inspiration.
(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)
Answer
(a) and (b)
Explanation
Solution
Events that occur during inspiration are (a) Contraction of diaphragm (b) Contraction of external intercostal muscles (c) Pulmonary volume increases (d) Intra pulmonary pressure decreases