MedicineCardiology
Learn Mode

Understanding the Physiology of Cardiac Function Quiz

Go to Quiz Page
#1

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

Right atrium
Explanation

Receives deoxygenated blood from the body.

#2

Which of the following is NOT a function of the cardiovascular system?

Production of insulin
Explanation

Not a function of the cardiovascular system.

#3

Which of the following is responsible for the electrical stimulation of the heart muscle?

Sinoatrial (SA) node
Explanation

Responsible for heart muscle electrical stimulation.

#4

What is the term for the relaxation phase of the cardiac cycle?

Diastole
Explanation

Relaxation phase of the cardiac cycle.

#5

Which of the following structures is responsible for preventing the backflow of blood from the left ventricle into the left atrium?

Mitral valve
Explanation

Prevents backflow from left ventricle to left atrium.

#6

What is the term for the volume of blood in the ventricles at the end of diastole, before the next contraction?

End-diastolic volume
Explanation

Volume of blood in ventricles before next contraction.

#7

During which phase of the cardiac cycle does ventricular contraction occur?

Systole
Explanation

Phase of cardiac cycle with ventricular contraction.

#8

What is the term for the network of specialized cells that conducts electrical impulses through the heart?

Purkinje fibers
Explanation

Network conducting electrical impulses in heart.

#9

Which of the following arteries supplies oxygen-rich blood to the heart muscle itself?

Coronary arteries
Explanation

Supplies oxygen-rich blood to the heart muscle.

#10

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

Epinephrine
Explanation

Increases heart rate and contraction force.

#11

What is the term for the volume of blood pumped out by each ventricle in one minute?

Cardiac output
Explanation

Volume of blood pumped by each ventricle per minute.

#12

Which of the following factors can decrease heart rate?

Parasympathetic nervous system activation
Explanation

Decreases heart rate.

#13

What condition results from a blockage in the coronary arteries, leading to reduced blood flow to the heart muscle?

Myocardial infarction
Explanation

Result of coronary artery blockage.

#14

Which of the following statements regarding the Frank-Starling mechanism is correct?

It states that the force of cardiac contraction is proportional to the initial length of the cardiac muscle fibers.
Explanation

Force of contraction proportional to initial muscle length.

#15

Which of the following conditions is characterized by the accumulation of fluid in the lungs due to impaired cardiac function?

Pulmonary edema
Explanation

Fluid accumulation in lungs due to cardiac impairment.

#16

What is the term for the phase of the cardiac cycle when the ventricles are in a state of relaxation and filling with blood?

Diastole
Explanation

Phase when ventricles relax and fill with blood.

Test Your Knowledge

Craft your ideal quiz experience by specifying the number of questions and the difficulty level you desire. Dive in and test your knowledge - we have the perfect quiz waiting for you!