Question

If atmospheric pressure is higher than alveolar pressure, air will___? (A)flow out of the lungs; inspiration (B) not flow; homeostasis (C) flow into the lungs; expiration (D) flow into the lungs; inspiration (E) flow out of the lungs; expiration

Answer 1

Answer:

Alveolar pressure is given with respect to atmospheric pressure, which is always set tozero. Thus, when alveolar pressure exceeds atmospheric pressure, it is positive; when alveolarpressure is below atmospheric pressure it is negative. Alveolar pressure determines whether air will flow into or out of the lungs.

Explanation:

it will flow out of the lungs

option A

Answer 2

Air will flow into the lungs largely due to difference in pressur i.e atmospheric pressure is greater than intra-alveolar pressure, and intra-alveolar pressure is greater than intrapleural pressure.

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