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The heart pumps blood into the aorta at a rate of 4 L/min. Calculate the average...

The heart pumps blood into the aorta at a rate of 4 L/min. Calculate the average speed of blood if the aorta’s diameter is 2 cm.

The aorta branches many times until the blood finally reaches the smallest branch: the capillaries. Each capillary has an average diameter of 6 μm and a length of 1 mm, and the blood slows down to 0.5 mm/s. Calculate the number of capillaries in the body.

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