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In today's lesson we look at blood, a transport liquid pumped by the heart to all parts of the body, after which it is returned to the heart to repeat the process.
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Pulmonary, systemic, coronary and por...
In this lesson we take a look at the circulatory system helps fight off diseases, helps the body maintain a normal body temperature, and provides the right chemical balance for the body to achieve homeostasis, or a state of stability among all its systems.
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The lymphatic system
In this lesson we look at the lymphatic system, a network of delicate tubes throughout the body. It drains fluid (called lymph) that has leaked from the blood vessels into the tissues and empties it back into the bloodstream via the lymph nodes.
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Diseases of the circulatory system
