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There are eleven main biological systems in the human body. Five of the most common systems are the skeletal system, muscular system, digestive system, respiratory system, and circulatory system. Five different body systems would be: the excretory system, the immune system, the reproductive system, the nervous system, and the respiratory system.

They each have their own way of carrying out bodily functions, and all keep life going on.

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10y ago

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