At what point in the figure do the semilunar valves close?
a. A c. C
b. B d. D
ANS: B
In the semilunar valves and aortic and pulmonic valves, closure is associated with the dicrotic notch on the aortic pressure tracing. See Figure 9-22.
Health Professions
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An abnormal amount of fluid can accumulate between the layers of the pericardium resulting in which of the following?
a. Pericardial effusion b. Pulmonary embolism c. Atrial fibrillation d. Premature ventricular contractions
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