Home › CBSE Class 11 (Science) › Biology › Breathing and Exchange of Gases › Which step of respiration is called pulmonary ve…
Which step of respiration is called pulmonary ventilation?
ABreathing in and out of air
BTransport by blood
CDiffusion across alveoli
DCellular oxygen use
Answer & Solution
Correct answer: A. Breathing in and out of air
Pulmonary ventilation is the drawing in of atmospheric air and release of CO2-rich alveolar air.
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