Cardiac Cycle and Valve Dynamics Quiz

Left atrium receives oxygenated blood from the lungs.

Heart valves prevent backflow of blood during the cardiac cycle.

Isothermal phase is not a phase of the cardiac cycle.

The lub-dub sound is associated with ventricular contraction and atrial relaxation.

SA node is responsible for initiating the electrical impulse in the heart.

Ventricular contraction occurs during systole.

Mitral valve separates the left atrium from the left ventricle.

Aortic valve prevents backflow from the aorta into the left ventricle.

Cardiac output is the volume of blood ejected by each ventricle in one minute.

Tricuspid valve separates the right atrium from the right ventricle.

Diastole is the period of relaxation of the heart muscle.

End-diastolic volume primarily determines the preload of the heart.

Valvular heart disease is characterized by the inability of heart valves to close properly, leading to backward flow of blood.

Arterial blood pressure primarily determines the afterload of the heart.

Fever is not a common symptom of valvular heart disease.