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7 May, 01:20

What are the main organ systems and what are their purposes?

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  1. 7 May, 01:42
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    Respiratory System - Breathing, getting oxygen to the blood cells and muscles

    Digestive System - Breaking down food for nutrients

    Excretory System - Letting out any waste

    Nervous System - Nerves, pain any feelings and such

    Skeletal System - Your Skeleton

    Muscle System - Your Muscles
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