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How do the respiratory & cardiovascular system work together?, The circulatory system and the respiratory system work closely together to ensure that organ tissues receive enough oxygen. oxygen is required for cellular functions..
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How does the endocrine system work? learn about the glands, Malfunctions in the endocrine system. commonly, things go wrong with the endocrine system that can affect the way glands work and thereby the entire human.
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How the body works main page – kidshealth – the web’s most, The human body is an amazing machine. learn more about it through movies, quizzes, articles, and more..
Your digestive system – kidshealth – the web’s most, The digestive system breaks down the food you eat. learn how in this article for kids..
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