2.2.2 The heart and blood vessels

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5 Terms

1
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What is the function of the circulatory system?

The circulatory system carries oxygen and nutrients to every cell in the body and removes waste products.

2
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What type of circulatory system do humans have?

Humans have a double circulatory system.

3
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What happens in the first circuit of the circulatory system?

Deoxygenated blood flows into the right atrium, then into the right ventricle, and is pumped to the lungs for gas exchange.

4
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What happens in the second circuit of the circulatory system?

Oxygenated blood flows into the left atrium, then into the left ventricle, and is pumped around the body.

5
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Why is the wall of the left ventricle thicker than the right?

Because the left ventricle pumps blood at high pressure around the whole body, whereas