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NPTE Physical Therapist Exam Review

Category - Physical Therapy

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What causes air to flow into the lungs during inspiration?

A decrease in alveolar pressure as compared to atmospheric pressure
An increase in alveolar pressure as compared to atmospheric pressure
A decrease in osmotic pressure as compared to atmospheric pressure
A decrease in pleural pressure as compared to atmospheric pressure

Explanation

Answer: A - A decrease in alveolar pressure as compared to atmospheric pressure causes air to flow into the lungs during inspiration. Pleural pressure is always slightly negative and does not cause inspiration.

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NPTE Physical Therapist Exam Review

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NPTE Physical Therapist Exam Review

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