circulatory system - heart - organisation

Question 1

which blood vessel carries oxygenated blood from the heart to the body?

Answer 1

aorta

Question 2

Which statement is always true regarding arteries?

Answer 2

they carry blood AWAY from the heart

Question 3

Which statement is always true regarding veins?

Answer 3

They carry blood TO the heat

Question 4

What is the job of a valve?

Answer 4

it prevents the blood from flowing backwards

Question 5

where is the peacemaker situated?

Answer 5

in the right atrium

Question 6

what is the job of the coronary arteries?

Answer 6

They supply the heart muscle with oxygen and nutrients

Question 7

how does deoxygenated/oxygenated blood enter the heart?

Answer 7

Deoxygenated comes through the vena cava

Oxygenated comes through the pulmonary vein

Question 8

what is the job of the peacemaker?
How does it do it?

Answer 8

it makes sure the heartbeat is steady

it sends electrical impulses to the muscular walls around it to enable the contraction and relaxation of the heart

Question 9

when the body has malfunctioned peacemakers, what is the alternative?

Answer 9

using an artificial one that has a wire to transport electrical impulses