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COMLEX Osteopathic Medicine

Category - Respir./Circul

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Which of the following are responsible for direct gas exchange with the alveoli?

Veins
Arteries
Capillaries
None of the above

Explanation

Answer - C - The smallest and thinnest part of the circulation system is the capillaries. The thin nature of capillaries allows the gas exchange with alveoli to occur.

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