Zoology - Breathing and Exchange of Gases Question with Solution | TestHub
ZoologyBreathing and Exchange of GasesHuman Respiratory SystemEasy2 minPYQ_2020
ZoologyEasysingle choice
Which of the following mechanism help to exhale air out of the lungs?
Options:
Answer:
A
Solution:
During exhalation, the diaphragm is relaxed and dome-shaped, which help to reduce the volume of the thoracic cavity and thus facilitate exhalation. Active inspiration involves the contraction, the diaphragm and external intercostals. Scalenes - elevates the upper ribs. Sternocleidomastoid - elevates the sternum.
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Breathing and Exchange of GasesSubtopic:Human Respiratory System
⏱ 2mℹ️ Source: PYQ_2020
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