Heart

Question 1

Function of right and left atria

Answer 1

Right- receives deoxygenated blood from the body via vena cava

Left- receives oxygenated blood from the lungs via pulmonary vein

Question 2

Function of ventricles

Answer 2

Right- receives deoxygenated blood from the right atrium
Left- receives oxygenated blood from the left atrium

Question 3

Function of pulmonary artery and vein

Answer 3

Artery - carries deoxygenated blood from the right ventricle to the lungs
Vein - carries oxygenated blood from the lungs to the left atrium

Question 4

Function of Vena cava and Aorta

Answer 4

Aorta - carries oxygenated blood from the left ventricle to the body
Vena cava - return deoxygenated blood used by body to the right atrium

Question 5

Function of semi lunar valves

Answer 5

Prevent back flow of blood into ventricles

Question 6

Function of atrioventricular valves

Answer 6

Prevent back flow of blood into the atria

Question 7

What is atrial contraction

Answer 7

Pressure in the atria increase when they contract
This forces blood into the ventricles

Question 8

What is ventricular contraction

Answer 8

The atria relax and the ventricles contract causing an increase in pressure in the ventricles

Atrioventricular valves snap shut to prevent back flow of blood into the relaxed atria
Pulmonary artery and aorta fill with blood

Question 9

What is relaxtion

Answer 9

Semi lunar valves snap shut due to high pressure in aorta and pulmonary artery to prevent back flow of blood into the relaxed ventricles