Lesson: Chapter 6 — Human body processes

The heart and blood circulation 5 of 5 Reset answers

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Question 5

What does double circulation mean?

A Blood passes through the heart twice in one full circuit B The heart beats twice a second C The body has two hearts D Blood flows both ways in the veins

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Blood passes through the heart twice in one full circuit. Once through the lungs circuit and once through the body circuit.

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