STANDARDZoology-Respiratory System
STANDARD Zoology Breathing Mechanism MCQ Question
Type: MCQ-conceptual-Medium
Mark the true statement among the following with reference to normal breathing
A
Inspiration is a passive process whereas expiration is active
B
Inspiration is an active process whereas expiration is passive
C
Inspiration and expiration are active processes
D
Inspiration and expiration are passive processes
Correct Answer
Option B
Detailed Explanation
Inspiration is the process by which fresh atmospheric air enters into the alveoli of the lungs. It is an active process and is brought out by the activity of respiratory muscles. Expiration is the process by which foul air is expelled out of the lungs. It is a normal passive process.
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