Which of the following is true of vertebrates with four-chambered hearts? There is a partial mixing of oxygen-rich and oxygen-poor blood. There is no mixing of oxygen-rich and oxygen-poor blood. There is a partial gas exchange in one chamber of the heart. There is a complete mixing of oxygen-rich and oxygen-poor blood

Question

Biology

Mckenna Buck

23 December, 00:52

Which of the following is true of vertebrates with four-chambered hearts? There is a partial mixing of oxygen-rich and oxygen-poor blood. There is no mixing of oxygen-rich and oxygen-poor blood. There is a partial gas exchange in one chamber of the heart. There is a complete mixing of oxygen-rich and oxygen-poor blood

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Tyrone Meadows · Answer 1

There is no mixing of oxygen-rich and oxygen-poor blood.

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The right atrium and right ventricle of the human heart pump oxygen-poor blood to the lungs and the left atrium receives oxygen-rich blood. They never mix.