Health, 25.03.2020 02:00 apere655

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Which of the following describes external respiration?

Oxygen diffuses out of the blood into the tissue cells.

Carbon dioxide diffuses from the tissue cells into the blood.

There is an exchange of gases between the lung alveoli and the blood capillaries.

All of the above

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Which of the following describes external respiration?

Oxygen diffuses out of th...