Heart And Respitory KS3

Question 1

What is the main 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 _____ and _____ .

Answer 3

atria and ventricles.

Question 4

What are the names of the two lower chambers of the heart?

Answer 4

Ventricles.

Question 5

What type of blood does the right side of the heart receive?

Answer 5

Deoxygenated blood.

Question 6

Where does the left side of the heart pump oxygenated blood?

Answer 6

To the rest of the body.

Question 7

What is the largest artery in the body?

Answer 7

Aorta.

Question 8

True or False: Veins carry oxygenated blood to the heart.

Answer 8

False.

Question 9

What is the role of red blood cells?

Answer 9

To carry oxygen to the body’s tissues.

Question 10

What is respiration?

Answer 10

The process of taking in oxygen and expelling carbon dioxide.

Question 11

What organ is primarily responsible for gas exchange?

Answer 11

Lungs.

Question 12

Fill in the blank: Air enters the lungs through the _____ .

Answer 12

Trachea.

Question 13

What are the tiny air sacs in the lungs called?

Answer 13

Alveoli.

Question 14

True or False: The diaphragm helps in the process of breathing.

Answer 14

True.

Question 15

What is the purpose of the pulmonary arteries?

Answer 15

To carry deoxygenated blood from the heart to the lungs.

Question 16

What do capillaries do?

Answer 16

Connect arteries and veins and facilitate the exchange of oxygen and carbon dioxide.

Question 17

What is the function of the valves in the heart?

Answer 17

To prevent the backflow of blood.

Question 18

Fill in the blank: The process of the heart beating is called _____ .

Answer 18

Cardiac cycle.

Question 19

What is the role of platelets in the blood?

Answer 19

To help with blood clotting.

Question 20

How many lungs do humans have?

Answer 20

Two.

Question 21

What is the name of the protective membrane surrounding the lungs?

Answer 21

Pleura.

Question 22

True or False: The left lung is smaller than the right lung.

Answer 22

True.

Question 23

What is the primary muscle involved in breathing?

Answer 23

Diaphragm.

Question 24

What is the function of the trachea?

Answer 24

To carry air to and from the lungs.

Question 25

Fill in the blank: The process of inhalation brings _____ into the lungs.

Answer 25

Oxygen.

Question 26

What happens during exhalation?

Answer 26

Carbon dioxide is expelled from the lungs.