Ques. The ventilation movements of the lungs in mammals are governed by
A. muscular walls of lung
B. diaphragm
C. intercostal muscles
D. both (b) and (c).
Answer:D
Ques. The ventilation movements of the lungs in mammals are governed by
A. muscular walls of lung B. diaphragm C. intercostal muscles D. both (b) and (c).