The Heart

Question 1

What is the primary function of the heart?

Answer 1

To pump blood throughout the body.

Question 2

True or False: The heart is a muscular organ.

Answer 2

True.

Question 3

Fill in the blank: The heart consists of _____ chambers.

Answer 3

four

Question 4

What are the names of the four chambers of the heart?

Answer 4

Left atrium, right atrium, left ventricle, right ventricle.

Question 5

What is the function of the left ventricle?

Answer 5

To pump oxygenated blood to the body.

Question 6

What is the role of the right atrium?

Answer 6

To receive deoxygenated blood from the body.

Question 7

Multiple Choice: Which valve prevents backflow into the left atrium?

Answer 7

Mitral valve.

Question 8

What is the name of the tissue that makes up the heart?

Answer 8

Cardiac muscle.

Question 9

True or False: The heart has its own electrical system.

Answer 9

True.

Question 10

What is the purpose of the sinoatrial (SA) node?

Answer 10

To act as the heart’s natural pacemaker.

Question 11

Fill in the blank: Blood is supplied to the heart muscle through the _____ arteries.

Answer 11

coronary

Question 12

What is the function of the pulmonary arteries?

Answer 12

To carry deoxygenated blood from the heart to the lungs.

Question 13

What is the name of the blood vessel that carries oxygenated blood from the heart to the body?

Answer 13

Aorta.

Question 14

Multiple Choice: Which part of the heart receives blood from the lungs?

Answer 14

Left atrium.

Question 15

What is the role of the tricuspid valve?

Answer 15

To prevent backflow from the right ventricle to the right atrium.

Question 16

True or False: The heart can function without input from the nervous system.

Answer 16

True.

Question 17

What is the term for the contraction phase of the heart cycle?

Answer 17

Systole.

Question 18

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

Answer 18

Diastole.

Question 19

Fill in the blank: The heart is located in the _____ cavity.

Answer 19

thoracic

Question 20

What is cardiac output?

Answer 20

The amount of blood the heart pumps in one minute.

Question 21

Multiple Choice: What is the average resting heart rate for adults?

Answer 21

60 to 100 beats per minute.

Question 22

What is the significance of the heart’s left side?

Answer 22

It handles oxygenated blood.

Question 23

True or False: The right side of the heart deals with oxygenated blood.

Answer 23

False.

Question 24

What is the role of the aortic valve?

Answer 24

To prevent backflow from the aorta into the left ventricle.

Question 25

What structure separates the left and right sides of the heart?

Answer 25

Septum.

Question 26

Fill in the blank: The _____ veins return deoxygenated blood from the body to the right atrium.

Answer 26

vena

Question 27

What is the effect of exercise on heart rate?

Answer 27

It increases heart rate.

Question 28

Multiple Choice: Which condition is characterized by a rapid heart rate?

Answer 28

Tachycardia.

Question 29

What is the primary purpose of the heart valves?

Answer 29

To ensure unidirectional blood flow.

Question 30

True or False: The heart can grow larger in response to increased demand.

Answer 30

True.

Question 31

What is heart failure?

Answer 31

A condition where the heart cannot pump enough blood to meet the body's needs.

Question 32

Fill in the blank: The _____ is a protective sac surrounding the heart.

Answer 32

pericardium

Question 33

What is the role of the pulmonary veins?

Answer 33

To carry oxygenated blood from the lungs to the heart.

Question 34

Multiple Choice: Which part of the heart has thicker walls, the atria or ventricles?

Answer 34

Ventricles.

Question 35

What is the function of the coronary arteries?

Answer 35

To supply blood to the heart muscle itself.

Question 36

What physiological process is responsible for the heart's rhythmic contractions?

Answer 36

Electrical conduction system.