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Home Q & A Board Biology-Related Homework Help General Biology
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traggthuyy@gmai traggthuyy@gmai
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5 years ago
Using a stethoscope, you listen to a beating heart and hear "lub-dup, lub-dup." These sounds are created by
A) muscles in the left ventricle.
B) blood flowing through the aorta.
C) blood pressure differentials from chamber to chamber.
D) blood recoiling against the closed valves.
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Campbell Biology: Concepts and Connections

Campbell Biology: Concepts and Connections


Edition: 8th
Authors:
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tehreem 9.tehreem 9.
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5 years ago
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