During inspiration, the blood flow through alveolar capillaries is ______ in the most superficial zone of...

Question

Question

During inspiration, the blood flow through alveolar capillaries is ______ in the most superficial zone of the lungs?

A) non existant

B) intermittent

C) continuous

Answer 1

Answer #1

Answer

A) Nonexistent

Explanation :- Superficial zone of lung is highly ventilated but the capillaries are collapsed. Hence diffusion do not occur.

While in lower zone of the lung the capillaries, the blood vessels have continuous blood flow.

Answer 2

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