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.What is the main function of the semilunar (aortic and pulmonary) valves? To prevent the flow of blood from atria to ventricles during atrial systole To prevent the flow of blood from veins to atria during the quiescent period To prevent the flow of blood from ventricles to atria during ventricular ejection To prevent the flow of blood from arteries back into the ventricles during isovolumetric relaxation 2. During atrial systole, which of the following pressure gradients exist? Higher pressure in atria compared to ventricles Higher pressure in ventricles compared to atria Higher pressure in ventricles compared to arteries Same pressure in atria and ventricles 3. In the heart, blood will flow from areas of high pressure to areas of low pressure (assuming no valves are present). True False 4. Which stage of the cardiac cycle helps to fill ventricles to maximum blood volume? Quiescent period Atrial systole Ventricular ejection Isovolumetric relaxation 5. During the quiescent period, blood is ONLY passively filling the atria (i.e., there is not blood in the ventricles). True False To prevent the flow of blood from atria to ventricles during atrial systole To prevent the flow of blood from veins to atria during the quiescent period To prevent the flow of blood from ventricles to atria during ventricular ejection To prevent the flow of blood from arteries back into the ventricles during isovolumetric relaxation 2. During atrial systole, which of the following pressure gradients exist? Higher pressure in atria compared to ventricles Higher pressure in ventricles compared to atria Higher pressure in ventricles compared to arteries Same pressure in atria and ventricles 3. In the heart, blood will flow from areas of high pressure to areas of low pressure (assuming no valves are present). True False 4. Which stage of the cardiac cycle helps to fill ventricles to maximum blood volume? Quiescent period Atrial systole Ventricular ejection Isovolumetric relaxation 5. During the quiescent period, blood is ONLY passively filling the atria (i.e., there is not blood in the ventricles). True False

/in /by

.What is the main function of the semilunar (aortic and pulmonary) valves?To prevent the flow of blood

from atria to ventricles during atrial systole

To prevent the flow of blood from veins to atria during the quiescent period

To prevent the flow of blood from ventricles to atria during ventricular ejection

To prevent the flow of blood from arteries back into the ventricles during isovolumetric relaxation

2.

During atrial systole, which of the following pressure gradients exist?

Higher pressure in atria compared to ventricles

Higher pressure in ventricles compared to atria

Higher pressure in ventricles compared to arteries

Same pressure in atria and ventricles

3.

In the heart, blood will flow from areas of high pressure to areas of low pressure (assuming no valves are present).

True

False

4.

Which stage of the cardiac cycle helps to fill ventricles to maximum blood volume?

Quiescent period

Atrial systole

Ventricular ejection

Isovolumetric relaxation

5.

During the quiescent period, blood is ONLY passively filling the atria (i.e., there is not blood in the ventricles).

True

False

 
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