Cardiovascular System Quiz

What is the main function of the heart?

• Pump blood

• Produce hormones

• Digest food

• Filter blood

Which chamber of the heart receives oxygenated blood from the lungs?

• right ventricle

• left ventricle

• right atrium

• left atrium

What is the average resting heart rate for adults?

• 30-50 beats per minute

• 110-130 beats per minute

• 150-200 beats per minute

• 60-100 beats per minute

What is the purpose of heart valves?

• To ensure one-way blood flow through the heart.

• To produce red blood cells.

• To filter impurities from the blood.

• To regulate blood pressure in the heart.

What is the outermost layer of the heart called?

• pericardium

• endocardium

• myocardium

• epicardium

What is the role of the sinoatrial (SA) node in heart rate regulation?

What is the medical term for a fast heart rate?

• arrhythmia

• tachycardia

• hypertension

• bradycardia

What is the function of the atrioventricular (AV) node in heart rate regulation?

• The AV node delays the electrical signal from the atria before transmitting it to the ventricles.

• The AV node is not involved in heart rate regulation.

• The AV node is responsible for pumping blood from the atria to the ventricles.

• The AV node speeds up the electrical signal from the atria before transmitting it to the ventricles.

What is the purpose of coronary arteries?

• To remove waste products from the heart muscle.

• To regulate the heart rate.

• To supply oxygenated blood to the heart muscle.

• To transport deoxygenated blood away from the heart.

What is the medical term for a slow heart rate?

• bradycardia

• tachycardia

• arrhythmia

• hypertension