Question

Which of the following will enable a person to breathe in air?

• A. Low intrapulmonary volume that increases the pressure inside lungs pulling in air
• B. High intrapulmonary volume that increases the pressure inside lungs pulling in air
• C. Low intrapulmonary volume that decreases the pressure inside lungs pulling in air
• D. High intrapulmonary volume that decreases the pressure inside lungs pulling in air

Answer 1

The correct option is D High intrapulmonary volume that decreases the pressure inside lungs pulling in air

Air moves from a region of high pressure to a region of low pressure. In high intrapulmonary volume, lung volume increases and hence the pressure decreases so, the air moves in.