The P-wave correlates with which event?

• atrial depolarization

• ventricle depolarization

• ventricle repolarization

• atrial repolarization

What event is triggered by the depolarization of the atria and ventricles.?

• relaxation

• contraction

• repulsion

• bradycardia

Tags

NGSS.MS-PS3-5

What does an electrocardiogram measure?

• The amount of pressure exerted on blood vessels.
• The electrical activity of the heart.
• How many times the heart contracts over time.
• The body's temperature caused by friction of blood in vessel.

What is going on in the heart during the T-wave

• SA node triggers depolarization in atria
• AV node triggers depolarization in ventricle, the main pumpung action
• Delay caused by the SA node
• Repolarization of the ventricle 

Intrinsic electrical impulses start at which of the following locations? (Which is the pacemaker of the heart?

• AV Node

• Bundle of His

• Purkinje fibers

• SA Node

Which is the correct path of electrical impulses through the heart?

• SA → Purkinje Fibers → Bundle Branches → AV
• SA → AV → Bundle Branches → Purkinje Fibers
• AV → SA → Bundle Branches → Purkinje Fibers
• AV → Bundle Branches → SA → Purkinje Fibers

What blood vessel of the heart delivers richly oxygenated blood to the body?

• Aorta
• Superior vena cava
• Tricuspid valve
• Pulmonary artery

Read carefully:

What part of the heart delivers oxygenated blood to the heart?

• Pulmonary artery
• Pulmonary vein
• Aorta
• Tricuspid valve

During systole, what is the myocardium (muscle tissue of the heart) doing?

• contracting

• relaxing

During diastole of the cardiac cycle, what is the myocardium (muscle tissue of the heart) doing?

• contracting

• relaxing