Zoology - Breathing and Exchange of Gases Question with Solution | TestHub
ZoologyBreathing and Exchange of GasesHuman Respiratory SystemEasy2 minPYQ_2020
ZoologyEasysingle choice
Which structure of the lungs is directly involved in O2/CO2 exchange between air and blood capillary?
Options:
Answer:
C
Solution:
The alveoli represent the ultimate structural and physiological units of the lung. Alveoli provide a large surface area for gaseous exchange by diffusion. The alveolar wall is very thin, consisting of squamous epithelium and an extensive network of blood capillaries. Due to very intimate contact of blood capillaries with the alveoli, the exchange of gases takes place smoothly.
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Breathing and Exchange of GasesSubtopic:Human Respiratory System
⏱ 2mℹ️ Source: PYQ_2020
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