Cardiac Cycle

What is systole?

• Relaxation in a chamber in the heart

• Contraction in a chamber of the heart

• a complete heartbeat

• Dilation in the heart

What is the cardiac cycle?

• A complete heartbeat

• Amount of blood the heart can pump

• How fast blood is pumped through the heart

• Systemic arterial pressure

Which step belongs to atrial systole?

• blood is pushed through systemic and pulmonary circuits and toward the atria

• semilunar valves open as a result of pressure

• contraction exerts enough pressure to close the AV valves, but not enough to open semilunar valves

• small amount of blood enters relaxed ventricles

Choose the correct order of the cardiac cycle

• Atrial systole, ventricular diastole, atrial diastole, ventricular systole

• Ventricular diastole, ventricular systole, atrial diastole, atrial systole

• Atrial systole, ventricular systole, atrial diastole, ventricle diastole

what is diastole?

• Contraction in a chamber of the heart that pushes blood

• Blood leaving the heart and going to the body

• Relaxation in a chamber of the heart that fills with blood

Which steps belong to Ventricular Systole?

• Goes through alternating waves of systole and diastole

• Contraction exerts enough pressure to open AV valves, but pressure is not high enough to open semilunar valves

• Rising pressure opens semilunar valves

• Heart chamber relaxes and fills with blood

What causes the "Lubb" sound?

• AV valves closing

• Buildup of pressure

• Ventricles relaxing

What causes the "dupp" sound?

• systole

• ventricles relaxing and the semilunar valves open

• AV valves closing

• the complete heartbeat