Where would you find the SA Node?

Upper right wall of the right atrium

Where would you find the AV node?

In the upper wall of the left ventricle

What is the function of the SA node?

It is the pacemaker that initiates each heartbeat

It conducts signals into the walls of the ventricles

It sends the signal down into the septum

It pauses the signal so that the atria can finish emptying

What is the function of the AV node?

It delays the signal so that the atria can finish emptying

It sends the signal into the septum

It is the pacemaker that initiates each heartbeat

It sends the signal up into the walls of the ventricles

What is the function of the AV valves?

To prevent backflow of blood from the ventricles into the atria.

To allow blood flow from the ventricles to the atria.

To regulate blood pressure in the arteries.

To facilitate oxygen exchange in the lungs.

List the name and location of the two semilunar valves.

Aortic valve (between left ventricle and aorta), Pulmonary valve (between right ventricle and pulmonary artery)

Bicuspid valve (between left ventricle and aorta) Mitral valve (between left atrium and left ventricle)

Mitral valve (between left atrium and left ventricle) Pulmonary valve (between right ventricle and pulmonary artery)

Tricuspid valve (between right atrium and right ventricle) Bicuspid valve (between left ventricle and aorta)

What are the functions of the semilunar valves?

The semilunar valves prevent backflow of blood from the arteries into the ventricles.

They separate the left and right atria.

They allow blood to flow freely into the arteries.

They regulate the heart rate during exercise.

What are the differences between arteries and veins?

Arteries carry oxygenated blood away from the heart; veins carry deoxygenated blood to the heart.

Arteries and veins both carry oxygenated blood; arteries are thicker than veins.

Arteries carry deoxygenated blood to the heart; veins carry oxygenated blood away from the heart.

Veins carry blood away from the heart; arteries bring blood back to the heart.

What is the difference between depolarization and repolarization in an ECG?

Depolarization is when cardiac muscles are contracting, while repolarization is when the muscles are relaxing.

Depolarization refers to the electrical activity of the brain, while repolarization is related to muscle fatigue.

Depolarization occurs during relaxation, while repolarization initiates contraction.

Depolarization is the resting state of the heart, and repolarization is when the heart is active.

What is happening in the heart during the isovolumetric contraction phase?

The ventricles are contracting and all the valves are closed, increasing pressure in the heart

The ventricles are contracting and all the valves are open to drain the blood from the heart

The atria are relaxing and filling with blood

The atria are contracting and sending blood into the lungs

What is happening in the heart during the ventricular ejection phase?

The ventricles contract and eject blood into the aorta and pulmonary artery.

The valves close to prevent backflow of blood.

The atria contract to push blood into the ventricles.

The heart is at rest and filling with blood.

Vena cava -> right atrium -> tricuspid valve -> right ventricle -> 1 -> pulmonary trunk -> pulmonary arteries -> lungs -> pulmonary veins ->2 ->3 -> left ventricle -> aortic valve -> aorta -> body

1 - pulmonary valve , 2 - left atrium , 3 - bicuspid valve

1 - lungs , 2 - left atrium, 3 - tricuspid valve

1 - right atrium , 2 - septum , 3 - bicuspid valve

1 - purkinje fibers , 2 - right atrium , 3 - body

What part of the heart contracts to produce the first and the second heart sounds?

1st sound - AV valves closing ; 2nd sound - semilunar valves closing

1st sound - semilunar valves closing ; 2nd sound - AV valves closing

What is the function of endocardium and where is it found?

The endocardium is found lining the heart chambers and reduces friction inside the heart

The endocardium is located in the brain and protects neurons.

The endocardium is a type of muscle tissue that pumps blood. It is found in the middle of the walls of the heart

The endocardium is found in the lungs and helps with gas exchange.

Differentiate systole from diastole.

Systole is higher pressure during contraction; diastole is lower pressure during relaxation.

Systole is lower pressure during relaxation; diastole is higher pressure during contraction.

Systole occurs during rest; diastole occurs during activity.

Systole refers to the filling of the heart; diastole refers to the emptying of the heart.

What is unique about the pulmonary arteries and veins?

The pulmonary arteries carry deoxygenated blood, and the pulmonary veins carry oxygenated blood.

Both pulmonary arteries and veins carry oxygenated blood.

The pulmonary arteries carry oxygenated blood, and the pulmonary veins carry deoxygenated blood.

The pulmonary arteries and veins are responsible for nutrient transport.

What are the symptoms of myocardial infarction?

Chest pain, shortness of breath, cold sweat, nausea, cardiac tissue death

What is ischemia and what are the symptoms?

A condition of reduced blood flow to the coronary arteries due to a blood clot, symptoms are nearly identical to a heart attack

Ischemia refers to a condition of normal blood flow with no symptoms.

Ischemia is an increase in blood flow due to high blood pressure, causing fatigue and dizziness.

Ischemia is a type of bacterial infection that can damage the heart valves with symptoms like fever and chills.

What is hypertrophic cardiomyopathy?

A genetic condition causing thickening of the heart muscle.

A type of heart surgery to repair damaged valves.

A viral infection that weakens the heart muscle.

A condition that causes the heart to shrink and pump less blood.

Which blood vessel(s) return blood to the heart from the lower region of the body? From the upper region of the body?

Inferior vena cava (lower body), Superior vena cava (upper body)

Aorta (upper body), coronary veins (lower body)

Pulmonary artery (lower body), pulmonary veins (upper body)

Coronary arteries (upper body), venules (lower body)

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HS-LS1-2, MS-LS2-3, HS-LS1-1

Standards-aligned

Chris Sheppard

Used 24+ times

FREE Resource

Normal sinus rhythm

Atrial fibrillation

Bradycardia

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

This EKG shows which heart rhythm?

Normal sinus rhythm

Bradycardia

Atrial fibrillation

Ventricular fibrillation

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which heart rhythm is seen here?

Bradycardia

Ventricular fibrillation

Normal sinus rhythm

Atrial fibrillation

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This EKG shows which heart rhythm?

This EKG shows which heart rhythm?

Which heart rhythm is seen here?

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Where would you find the AV node?

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