Which one of the following statements is corr | vedclass

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(B) During joint diastole,all four chambers of the heart are in a relaxed state. In this phase,the tricuspid and bicuspid valves are open,allowing blo

Vedclass · Accepted Answer

Blood moves freely from atrium to the ventricle during joint diastole.

Vedclass · Answer

(B) During joint diastole,all four chambers of the heart are in a relaxed state. In this phase,the tricuspid and bicuspid valves are open,allowing blood to flow freely from the atria into the ventricles. Option $A$ is incorrect because the valves open due to the pressure gradient created by atrial relaxation and ventricular filling,not just contraction. Option $C$ is incorrect because increased ventricular pressure causes the closing of the atrioventricular valves,while the semilunar valves open. Option $D$ is incorrect because the $SA$ node,not the $AVN$,is the pacemaker that initiates the action potential for atrial contraction.

Which one of the following statements is correct?

Similar Questions

Considering the stroke volume of an adult healthy human being is $70 \ mL$,identify the cardiac output in one hour from the following:

Systole $= ....P.....,$ Diastole $= .....Q....$
$P \quad Q$

During joint diastole,..........

Define a cardiac cycle and the cardiac output.

What is meant by cardiac cycle?

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