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Anatomy and Physiology- Cardiovascular Sysytem › View

At the instant following the second heart sound, which heart valves are open?

A. Both atrioventricular valves and semilunar valves

B. Atrioventricular valves only

C. All valves are closed

D. Semilunar valves only

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Cardiology Services Med Terms › View

The SA node is responsible for which type of heart rhythm?

A. sinus

B. atrial

C. ventricular

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