Cardiac Cycle and Electrocardiogram

If there is higher pressure in the aorta, there will be no movement of blood out of the ventricle

• True

• False

Tags

NGSS.HS-LS1-3

The function of the atrium

• To collect blood

• To pump blood to the lungs

• To pump blood into systemic circulation

• To pump blood to the heart muscle

The opening of semilunar valves is due to

• increased ventricular pressure

• decrease ventricular pressure

• increased aortic pressure

• increase in artrial volume

If ventricular pressure is low, what will happen to the arterioventricular valves?

• close

• open

During artrial systole, the ventricles are

• in systole

• in diastole

• contracting

• not filling

Which component of ECG cycle shows ventricular systole (contration)?

• P

• QRS

• T

• U

In the diagram below, which part of the tracing represents the contraction of the atria?

• P

• T

• R

• S

In the 3 second strip below, the heart rate is

• 7

• 60

• 80

• 75

Tags

NGSS.HS-LS1-3

What shows the time a signal is delayed at the AV nodes?

• PR segment

• ST segment

• PR interval

• QRS complex

Name part of red

• T wave

• Q wave

• R wave

• S wave