SB8d The Heart

Question 1

What are the hearts 4 chambers?

Answer 1

.right atrium
.left atrium
.right ventricle
.left ventricle

Question 2

What is the passage of blood through the heart?

Answer 2

vena cava -> right atrium -> right ventricle -> pulmonary artery -> pulmonary vein -> left atrium -> left ventricle -> aorta

Question 3

What is the role of the vena cava?

Answer 3

carries deoxygenated blood from the body to the heart.

Question 4

What is the role of the aorta?

Answer 4

carries oxygenated from the heart to the body.

Question 5

What is the role of the pulmonary artery?

Answer 5

carries deoxygenated blood to the lungs.

Question 6

What is the role of the pulmonary vein?

Answer 6

carries oxygenated blood from the lungs to heart.

Question 7

Why are there valves in the heart?

Answer 7

to prevent backflow.

Question 8

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

Answer 8

the left side of the heart needs to pump blood around the whole body, whereas the right side only needs to pump blood to the lungs.

Question 9

Cardiac output = ?

Answer 9

stroke volume x heart rate