Heart And Its Functions

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 has four chambers.

Answer 2

True.

Question 3

Fill in the blank: The two upper chambers of the heart are called _______.

Answer 3

atria.

Question 4

What are the two lower chambers of the heart called?

Answer 4

Ventricles.

Question 5

What separates the left and right sides of the heart?

Answer 5

The septum.

Question 6

Which valve prevents backflow of blood from the aorta to the left ventricle?

Answer 6

Aortic valve.

Question 7

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

Answer 7

It acts as the natural pacemaker of the heart.

Question 8

True or False: The heart is a muscle.

Answer 8

True.

Question 9

What type of blood does the right atrium receive?

Answer 9

Deoxygenated blood.

Question 10

Multiple Choice: Which of the following arteries carries oxygenated blood from the heart? A) Pulmonary artery B) Aorta C) Coronary artery

Answer 10

B) Aorta.

Question 11

What is the average resting heart rate for adults?

Answer 11

60 to 100 beats per minute.

Question 12

Fill in the blank: The _______ circuit carries blood from the heart to the lungs and back.

Answer 12

pulmonary.

Question 13

What is cardiac output?

Answer 13

The amount of blood the heart pumps in one minute.

Question 14

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

Answer 14

True.

Question 15

What is the function of the mitral valve?

Answer 15

It regulates blood flow from the left atrium to the left ventricle.

Question 16

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

Answer 16

Left atrium.

Question 17

Multiple Choice: Which of the following is NOT a part of the heart’s conduction system? A) SA node B) AV node C) Aorta

Answer 17

C) Aorta.

Question 18

What is the role of coronary arteries?

Answer 18

To supply blood to the heart muscle.

Question 19

Fill in the blank: The _______ valve prevents backflow from the right ventricle to the right atrium.

Answer 19

tricuspid.

Question 20

What is the heart’s rhythm influenced by?

Answer 20

Electrical impulses.

Question 21

True or False: The heart can increase its rate in response to exercise.

Answer 21

True.

Question 22

What is the term for the heart’s ability to contract and relax?

Answer 22

Cardiac cycle.

Question 23

What is the primary function of the pericardium?

Answer 23

To protect and lubricate the heart.

Question 24

Fill in the blank: The heart’s left ventricle has _______ walls than the right ventricle.

Answer 24

thicker.

Question 25

What does the term 'bradycardia' refer to?

Answer 25

A slower than normal heart rate.

Question 26

What does the term 'tachycardia' refer to?

Answer 26

A faster than normal heart rate.

Question 27

True or False: The heart's valves open and close passively based on pressure differences.

Answer 27

True.