The body system that transports needed materials to cells and carries cell wastes away from cells is the circulatory system.

Here's a breakdown:

* Blood: The circulatory system uses blood as its primary transport medium. Blood carries oxygen, nutrients, hormones, and other essential substances to cells. It also picks up waste products like carbon dioxide and metabolic byproducts.

* Heart: The heart acts as a pump, driving the blood through the body's vast network of blood vessels.

* Blood vessels: Blood vessels, including arteries, veins, and capillaries, form a complex network that delivers blood to every cell in the body.

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