Select the correct events that occur during inspiration.
(a) Contraction of diaphragm
(b) Contraction of external intercostal muscles
(c) Pulmonary volume decreases
(d) Intra pulmonary pressure increases
1
(a), (b) and (d)
2
only (d)
3
(a) and (b)
4
(c) and (d)
5
Question Not Attempted