Mass transport (DWR)

Question 1

What are the four main blood vessels involved in bringing blood to and from the heart?

Answer 1

Vena Cava, Pulmonary vein, Pulmonary artery, Aorta

Question 2

What is the job of the vena cava?

Answer 2

Brings deoxygenated blood from the body to the right atrium.

Question 3

What is the job of the pulmonary vein?

Answer 3

Bring oxygenated blood from the lungs to the left atrium

Question 4

What is the job of the aorta?

Answer 4

Brings oxygenated blood from the left ventricle to the cells of the body

Question 5

What is the job of the pulmonary artery?

Answer 5

Brings deoxygenated blood to the lungs from the right ventricle

Question 6

What blood vessel supplies the heart with oxygen and why is it important?

Answer 6

Coronary artery. It is important as lack of blood flow to the heart can lead to myocardial infarction

Question 7

Two types of chambers in the heart?

Answer 7

Atria and Ventricles, two on each side

Question 8

Job of the atria

Answer 8

Upper chambers that collect blood coming in from the body or the lungs through veins. They have thinner walls than ventricles.

Question 9

Job of the ventricles

Answer 9

Lower chambers that pump blood through arteries to the body or the lungs. They have thicker walls than arteries because they pump blood a longer distance.

Question 10

Why does the left ventricle have a thicker wall than the right ?

Answer 10

The left ventricle has a thicker wall than the right as it has to pump blood a further distance around the whole body.

Question 11

Job of the semilunar valves

Answer 11

Semilunar valves allow blood to be pumped forward into the arteries but prevent backflow of blood from the arteries into the ventricles.