Q. 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) (c) and (d)
B) (a), (b) and (d)
C) only (d)
D) (a) and (b)
Explanation
[Solution] During inspiration the diaphragm and external intercostal muscles contract, pulmonary volume increases and intrapulmonary pressure decreases. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.