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A stenotic aortic valve
increases afterload, thereby increasing the work of the left ventricle.
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causes a right-to-left shunt.
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is a narrowing of the right semilunar valve.
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causes right ventricular hypertrophy and right-sided heart failure.
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During atrial systole, the
ventricles are in systole.
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ventricles are relaxed.
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semilunar valves are open.
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AV valves are closed.
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Which of the following is happening during atrial systole?
Both A and C are true.
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The ventricles are relaxed.
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The AV valves are closed.
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The atria pump blood into the ventricles.
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Which of the following elevates blood pressure?
Vasodilators
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Antihypertensive drugs
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Vasopressors
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Diuretics
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What is the term that refers to an increase in stroke volume in response to the stretching of the heart?
A positive inotropic effect
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Heart block
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Angina pectoris
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Starling's law of the heart
100%
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Digoxin exerts a (-) chronotropic effect and (+) inotropic effect. Which of the following describes these effects?
Decreases heart rate and strengthens myocardial contraction
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Increases heart rate and increases systemic vascular resistance
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Decreases heart rate and decreases stroke volume
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Slows heart rate and decreases cardiac output
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Parte de la fisiopatología de la anemia perniciosa es por mala absorción de (VitB12)?
True
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False
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Which of the following structures has the greatest effect on systemic vascular resistance?
Veins
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Heart
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Capillaries
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Arterioles
100%
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An increase in venous return causes an increase in cardiac output. This is accomplished by
a (+) chronotropic effect.
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depolarization.
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a (+) inotropic effect.
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Starling's law of the heart.
100%
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Los anti-inflamatorios no esteroideos inhiben la enzima ciclo-oxigenasa 1 y 2
True
100%
False
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