Which of the following is the most appropriate in normal circumstances?

Question

Which of the following is the most appropriate in normal circumstances? (A) During inspiration the intrapulmonary pressure is less than the atmospheric pressure (B) During expiration, the intrapulmonary pressure is less than the atmospheric pressure (C) During inspiration, the intrapulmonary pressure is more than the atmospheric pressure (D) During expiration the intrapulmonary pressure is equal to the atmospheric pressure

Tardigrade Admin · Accepted Answer

During inspiration, the intrapulmonary pressure, i.e pressure inside the lungs should be less than atmospheric pressure, so that air from area of high pressure (atmosphere) shall flow to area of low pressure (inside lungs) leading to inspiration.

Q. Which of the following is the most appropriate in normal circumstances?

During inspiration the intrapulmonary pressure is less than the atmospheric pressure

During expiration, the intrapulmonary pressure is less than the atmospheric pressure

During inspiration, the intrapulmonary pressure is more than the atmospheric pressure

During expiration the intrapulmonary pressure is equal to the atmospheric pressure

During inspiration, the intrapulmonary pressure, i.e pressure inside the lungs should be less than atmospheric pressure, so that air from area of high pressure (atmosphere) shall flow to area of low pressure (inside lungs) leading to inspiration.