Question

A human has _______km of blood vessels in their body​

Answer 1

Answer: The blood vessels (arteries, capillaries, and veins), laid end-to-end, would measure about 100,000 km (60,000 miles), or approximately 2.5 times the circumference of the earth. Capillaries account for about 80,000 km (50,000 miles) of vasculature in an adult.

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Answer 2

Answer:

Depending on how they're measured, humans have about 150,000 kilometers of blood vessels - enough to go around the world several times!

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