Cardiac Cycle and Heart

what is A

• atriole systole

• first phase of ventricular systole

• second phase of ventricular systole

• early ventricular diastole

• late ventricular diastole

what is B

• atriole systole

• first phase of ventricular systole

• second phase of ventricular systole

• early ventricular diastole

• late ventricular diastole

what is C

• atriole systole

• first phase of ventricular systole

• second phase of ventricular systole

• early ventricular diastole

• late ventricular diastole

what is D

• atriole systole

• first phase of ventricular systole

• second phase of ventricular systole

• early ventricular diastole

• late ventricular diastole

Tags

NGSS.HS-LS2-3

What does diastole refer to in the cardiac cycle?

• Contraction of the heart

• Relaxation of the heart and filling with blood

• The frequency of the heartbeat

• The electrical impulses in the heart

What is the first event of the cardiac cycle as described in the learning material?

• The ventricles contract

• The atria relax

• The entire heart relaxes

• The atria contract

During which phase of the cardiac cycle is arterial pressure at its lowest?

• Systole

• Diastole

• Mid-cycle

• Peak contraction

During the cardiac cycle, what happens when the atria fill?

• The pressure in the ventricles becomes greater than in the atria, closing the AV valves.

• The AV valves close, preventing blood from entering the ventricles.

• The pressure in the atria is greater than in the ventricles, forcing the AV valves open.

• The ventricles contract, pushing blood back into the atria.

What is the volume of blood ejected from the ventricles during each contraction called (term)?

Identify the structure(s) that make up the cardiac conduction system

• Sinoventicle node

• Sinoatrial node

• Sinoaortic node

• Sinovac node