Physiology · Respiratory System · Easy

Lungs

Meaning: The paired organs of respiration that exchange oxygen and carbon dioxide with the blood.

In practice: The lungs contain about 300 million alveoli to maximise gas exchange surface area.

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Two questions on related physiology words.

Which word means: To remove waste or particles from a fluid, as performed by the kidneys.

Which word means: The production and release of substances from cells or glands.

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