Cardiac Physiology and Function Quiz

Explore cardiac physiology with these quiz questions on heart function, blood flow, and electrical conduction. Test yourself now!

Practice Learn Test

Which chamber of the heart receives deoxygenated blood from the body?

Left atrium

Right atrium

Left ventricle

Right ventricle

What is the primary function of heart valves?

To regulate blood pressure

To control heart rate

To prevent backward flow of blood

To regulate oxygen levels in the blood

Which of the following is NOT a major coronary artery?

Left main coronary artery

Right coronary artery

Circumflex artery

Radial artery

What is the term for the phase of the cardiac cycle when the heart muscle contracts and pumps blood out?

Diastole

Systole

Repolarization

Depolarization

What is the term for the volume of blood pumped out by each ventricle of the heart per minute?

Stroke volume

Cardiac output

Heart rate

End-diastolic volume

Which of the following hormones increases heart rate and force of contraction?

Insulin

Thyroxine

Adrenaline

Estrogen

What is the name of the condition where there is an abnormal rhythm of the heart characterized by rapid and irregular beating?

Bradycardia

Tachycardia

Atrial fibrillation

Ventricular fibrillation

What is the role of the SA (sinoatrial) node in the heart's electrical conduction system?

To delay electrical impulses

To receive impulses from the AV node

To initiate the electrical impulse for heart contraction

To regulate blood flow through the valves

Which of the following ions plays a key role in initiating cardiac muscle contraction?

Potassium

Calcium

Sodium

Chloride

#10

What is the term for the relaxation phase of the cardiac cycle when the heart muscle is resting and filling with blood?

Systole

Diastole

Repolarization

Depolarization

#11

Which of the following structures conducts electrical impulses from the atria to the ventricles in the heart?

Purkinje fibers

Bundle of His

AV node

SA node

#12

What is the term for the condition characterized by the narrowing of the coronary arteries due to plaque buildup?

Atherosclerosis

Angina pectoris

Coronary artery disease

Myocardial infarction