Cardiovascular System Lessons 3 & 4

Valves are responsible for preventing the -------- of blood.

Once oxygenated blood is collected in the left atrium, what valve does it pass through before entering the left ventricle?

• Tricuspid

• Semilunar

• Bicuspid

Once deoxygenated blood is collected in the right atrium, what valve does it pass through before entering the right ventricle?

• Tricuspid

• Semilunar

• Bicuspid

What is the name of the valve that stops the blood from going back into the ventricles after it has gone into the arteries?

The heart consists of 3 types of blood vessels; Arteries, Capillaries and _____.

What blood vessel has thick muscular walls and works under high pressure?

What blood vessel has thin walls and work well under low pressure?

What is the name of the smallest blood vessel and are the links between arteries and veins?

What is the name of the protein found in the red blood cells that carries oxygen in your body and gives blood its red colour?

• Tubulin

• Elastin

• Haemoglobin

• Myoglobin