Zoology - Breathing and Exchange of Gases Question with Solution | TestHub
ZoologyBreathing and Exchange of GasesHuman Respiratory SystemEasy2 minPYQ_2020
ZoologyEasysingle choice
Expiration is the result of
Options:
Answer:
D
Solution:
Mechanism of expiration:
A. Relaxation of the diaphragm and the intercostal muscles → Diaphragm and sternum reach their normal positions.
B. Thoracic volume is reduced and thus the pulmonary volume is also reduced.
C. Decrease in the thoracic volume → Decrease in pulmonary volume → Increase in the intra-pulmonary pressure.
D. Intra-pulmonary pressure more than the atmospheric pressure and the air rushes out (expiration).
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Breathing and Exchange of GasesSubtopic:Human Respiratory System
⏱ 2mℹ️ Source: PYQ_2020
Doubts & Discussion
Loading discussions...
