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A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

ScienceOne small ahaBody system

This protein carries oxygen in red blood cells.

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Your new ahaHemoglobin

Hemoglobin's iron-containing groups allow red blood cells to carry oxygen. Source: Hemoglobin ↗

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More from Human Body

A few more worth knowing.

  1. 13This artery carries blood away from the heart to the body.RECALL
    Aorta

    The body's largest artery

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  2. 14This major veins return blood to the heart.RECALL
    Venae cavae

    Superior and inferior vena cava

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  3. 15This heart chamber pumps oxygen-rich blood to the body.RECALL
    Left ventricle

    Its wall is thick and muscular

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