Exercise 19: Cardiovascular Physiology

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When the semilunar valves are open during a cardiac cycle, which of the following occur? I- atrioventricular valves are closed; II- ventricles are systole; III- ventricles are in diastole; IV- blood enters the aorta; V- blood enters the pulmonary trunk; VI- atrial contraction.

I, II, IV, and V I- atrioventricular valves are closed II- ventricles are systole; IV- blood enters the aorta; V- blood enters the pulmonary tract

Which of the following statements is not true?

Both systolic and diastolic blood pressure can be obtained via the pulse method

The two distinct heart sounds, described phonetically as lubb and dump, represent

blood turbulence associated with closing of the atrioventricular and semilunar valves

When ventricular pressure drops below atrial pressure, which phase of the cardiac cycle occurs?

atrial systole

During which phase of the cardiac cycle are all four chambers in diastole?

relaxation period


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