Physiology · Cardiovascular System · Easy

Heart

Meaning: The muscular organ that pumps blood continuously around the circulatory system.

In practice: The heart beats approximately 100,000 times per day to maintain circulation.

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Two questions on related physiology words.

Which word means: The primary sugar used by cells as an energy source.

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

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