jamiedouville jamiedouville

13-12-2020
Biology

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1. The mechanism of breathing – how do inhalation and exhalation actually occur.

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marshalhaynes20 marshalhaynes20

13-12-2020

When the air pressure within the alveolar spaces falls below atmospheric pressure, air enters the lungs (inspiration), provided the larynx is open; when the air pressure within the alveoli exceeds atmospheric pressure, air is blown from the lungs (expiration).

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