Circulatory System- The heart

Question 1

What is the circulatory system made up of

Answer 1

Blood, heart, blood vessels

Question 2

What is a double circulatory system

Answer 2

Two circuits joined together

Question 3

What does the right ventricle do

Answer 3

Pumps deoxygenated blood to the lungs to take in oxygen. The blood then returns to the heart

Question 4

What does the left ventricle do

Answer 4

Pumps oxygenated blood to the rest of the body and the deoxygenated blood returns to the heart to be pumped to the lungs again

Question 5

How does the heart pump around blood

Answer 5

1) blood flows through the two atria from the vena cava and the pulmonary vein
2) the atria contracts and pushes the blood into the ventricles
3) The ventricles contracts and pushes the blood into the pulmonary artery and aorta
4) the blood is carried to the organs and returns through the veins
5) the atria starts to fill up again and the cycle starts over

Question 6

What do the coronary arteries do

Answer 6

They make sure the heart gets oxygenated blood

Question 7

What is a pacemaker

Answer 7

A small group of cells in the right atrium cause small electric impulses to cause the muscle cells to contract. They control your heart rate

Question 8

What is an artificial pacemaker

Answer 8

It is used when someone has an irregular heartbeat or their pacemaker doesn’t work. It is a device that has a wire going into the heart and it produces an electric current to keep your heart beating regularly