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In factor analyses of the Wechsler tests, this subtest frequently loads on a third factor variously interpreted as "freedom from distractibility" or "memory."
Mitral Valve
A valve in the heart that lets blood flow from the left atrium to the left ventricle, preventing backflow.
Tricuspid Valve
Valve closing the orifice between the right atrium and the right ventricle of the heart.
Pulmonary Semilunar Valve
A valve in the heart located between the right ventricle and the pulmonary artery, preventing backflow of blood into the heart.
Aortic Semilunar Valve
A valve in the heart that lies between the left ventricle and the aorta, preventing backflow of blood into the ventricle.
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