Physiology · Respiratory System · Medium

Oxygen

Meaning: A gas absorbed in the lungs and carried by haemoglobin to every cell in the body.

In practice: Oxygen saturation below 94% requires supplemental oxygen therapy.

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Two questions on related physiology words.

Which word means: The principal extracellular electrolyte regulating fluid balance and nerve function.

Which word means: To take up substances across a biological membrane into the bloodstream.

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