Q. During expiration, the diaphragm becomes
A) Normal
B) Flattened
C) Dome-shaped
D) Oblique
Explanation
Expiration is a process by which C$O_{2}$ is expelled out from the lungs. Muscle fibres of the diaphragm relax make it convex, and decreasing the volume of thoracic cavity.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.