Paper 2: The Heart

Question 1

What does the heart do?

Answer 1

Pump blood around the body

Question 2

What does the pulmonary artery do?

Answer 2

Carries deoxygenated blood from the heart to the lungs

Question 3

What does the vena cava do?

Answer 3

Bring deoxygenated blood from the heat to the lungs

Question 4

What do valves do?

Answer 4

Prevent blood from flowing backwards through the heart

Question 5

Why is the left ventricle muscle wall thicker than right ventricle?

Answer 5

It pushes blood all around the body

Question 6

What does the pulmonary vein do?

Answer 6

Brings oxygenated blood from lungs to heart

Question 7

What does the aorta do?

Answer 7

Carries deoxygenated blood from heart to body

Question 8

What is the process of blood circulation?

Answer 8

Blood enters the atria
The atria contracts, forcing blood into the ventricle
Ventricle contracts, forcing blood into arteries
Blood flows through the arteries to the organs and returns to the heart through the veins