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A LITTLE SOMETHING WORTH KNOWING

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ScienceOne small ahaBody system

This blood cells carry oxygen.

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Your new ahaRed blood cells

Mature human red blood cells lack a nucleus, leaving more room for haemoglobin. Source: Red blood cells ↗

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  1. 10This blood cells help defend against infection.RECALL
    White blood cells

    Part of the immune system

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  2. 11Platelets help blood perform this action to seal a damaged vessel.RECALL
    Clot

    They gather at damaged vessels

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  3. 12This protein carries oxygen in red blood cells.RECALL
    Hemoglobin

    It contains iron

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