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Dear student,
The components of transport system in humans are heart, blood, lymph , blood and lymph vessels.

The function are as follows -
Heart - pumps blood
Blood and lymph - Help in transport of substance like nutrients, hormones, fat and waste.
Blood and lymph vessels - provide the medium for the transport.

It is necessary to separate oxygenated and deoxygenated blood to ensure the efficiency of the circulatory system.

Regards

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