Circulatory System Quiz

Question 1

What are the 3 main parts of the Circulatory System?

Answer 1

The heart, blood, and blood vessels.

Question 2

What is the function of the Circulatory System?

Answer 2

transport substances around the body.

Question 3

What is the primary function of the circulatory system regarding nutrients?

Answer 3

It moves nutrients absorbed from the intestine to all the body’s cells.

Question 4

What happens to blood flowing through the lungs?

Answer 4

Blood picks up oxygen.

Question 5

What role does blood play in waste disposal?

Answer 5

Blood carries waste from the body’s tissue for disposal.

Question 6

What is transported to the lungs for release into the air?

Answer 6

Carbon dioxide (CO2).

Question 7

What are the 4 components of blood?

Answer 7

Red Blood Cells, White Blood Cells, Platelets, and Plasma.

Question 8

Which blood component is the most plentiful?

Answer 8

Red Blood Cells.

Question 9

What percentage of blood volume do Red Blood Cells make up?

Answer 9

Almost half.

Question 10

What protein in Red Blood Cells transports oxygen?

Answer 10

Hemoglobin.

Question 11

What is the primary function of White Blood Cells?

Answer 11

Infection fighters; recognizing and destroying invading bacteria and viruses.

Question 12

What percentage of blood volume do White Blood Cells make up?

Answer 12

Back: Less than 1%.

Question 13

What is the primary function of Platelets?

Answer 13

Helping in blood clotting.

Question 14

What component of blood carries the blood cells and makes up half of the blood’s volume?

Answer 14

Plasma.

Question 15

What three types of tissue make up the heart?

Answer 15

Cardiac muscle tissue, nerve tissue, and connective tissue.

Question 16

What happens when cardiac muscles in the heart contract?

Answer 16

The heart contracts and moves blood around the body.

Question 17

What determines the frequency of the heart’s beat?

Answer 17

Physical activity, stress, temperature, and general health.

Question 18

What type of tissue covers the muscles and nerves of the heart?

Answer 18

Epithelial tissue.

Question 19

What is the function of the epithelial tissue covering the heart?

Answer 19

Reduces friction and protects from damage.

Question 20

What lines the inner surface of the heart where blood flows?

Answer 20

Smooth epithelial tissue.

Question 21

Why is the inner lining’s smoothness important?

Answer 21

Allows blood to flow freely.

Question 22

What can cause health concerns in the heart?

Answer 22

Hardening or roughening of the inner lining.

Question 23

What coordinates the heartbeat?

Answer 23

Nerve tissue.

Question 24

What is the primary function of the heart?

Answer 24

Pumping blood throughout the body.

Question 25

What are the three types of blood vessels?

Answer 25

Arteries, Veins, and Capillaries.

Question 26

What do arteries carry?

Answer 26

Blood away from the heart.

Question 27

Why are artery walls thicker?

Answer 27

To withstand pressure from blood pumped away from the heart.

Question 28

What do veins carry?

Answer 28

Blood towards the heart.

Question 29

Why are vein walls thinner?

Answer 29

Blood is at low pressure.

Question 30

What happens to vein and artery size as distance from the heart increases?

Answer 30

They decrease in size.

Question 31

What connects veins and arteries?

Answer 31

Capillaries.

Question 32

What is unique about capillary walls?

Answer 32

Very thin to allow diffusion.

Question 33

What diffuses from blood to tissues in capillaries?

Answer 33

Oxygen and nutrients.

Question 34

What passes from tissues to blood in capillaries?

Answer 34

Carbon dioxide and waste.

Question 35

What supplies every part of the body with blood?

Answer 35

A network of capillaries.

Question 36

What is the main function of arteries?

Answer 36

Carry oxygenated blood away from the heart.

Question 37

What is the main function of veins?

Answer 37

Return deoxygenated blood to the heart.

Question 38

Where does exchange of oxygen, nutrients, and waste occur?

Answer 38

Capillaries.

Question 39

What does the circulatory system provide to the lungs?

Answer 39

Good blood supply.