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Bio 202 Unit 2 Chapter 19 Practice Quiz 2

Bio 202 Unit 2 Chapter 19 Practice Quiz 2 - Chapter 18...

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Chapter 18 Practice Quiz 2 1. Heart valves function to A. pump the blood B. prevent clots from entering the heart C. direct the blood flow through the heart D. measure the blood pressure 2. The right and left atrioventricluar valves open when the A. atria contract B. papillary muscles contract C. atria relax D. ventricles contract 3. During atrial systole, the upper chambers contract and open the AV valves so that blood can be pumped into the 4. Blood flows past the aortic semilunar valve when the contracts. 5. Which is true? atrium.
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