How many components make up the blood?

• 1

• 2

• 3

• 4

Which part of the blood contains haemoglobin?

• white blood cells

• red blood cells

• plasma

• platelets

Which part of the blood fights infection?

• white blood cells

• red blood cells

• plasma

• platelets

Which part of the blood helps with clotting?

• white blood cells

• red blood cells

• plasma

• platelets

Which TWO molecules are carried in the plasma?

• glucose

• water

• oxygen

• nitrogen

Which blood vessels carries blood AWAY from the heart?

• veins

• capillaries

• arteries

Which blood vessel carries blood back TO the heart?

• veins

• capillaries

• arteries

In which blood vessel does gas exchange occur?

• veins

• capillaries

• arteries

Which blood vessel contains valves?

• veins

• capillaries

• arteries

What is the job of the valves?

• stop blood clots

• increase surface area

• prevent back flow

• make red blood cells