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bekas [8.4K]
3 years ago
14

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

Biology
1 answer:
Masteriza [31]3 years ago
6 0

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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