Physiology · Cell Biology · Medium

Diffusion

Meaning: Movement of molecules from high to low concentration without energy.

In practice: Oxygen diffuses from the lungs into the bloodstream.

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Two questions on related physiology words.

Which word means: To produce and release a substance from a cell or gland into a duct or bloodstream.

Which word means: A regular recurring pattern of biological activity, such as circadian or cardiac rhythm.

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