Biology Grade 9 SA2-Circulation/Plants Nutrition

Carry blood away from the heart

• vena cava

• veins

• arteries

• capillaries

Carry blood to the heart

• aorta

• veins

• arteries

• capillaries

Smallest blood vessel

• aorta

• artery

• vein

• capillary

• vena cava

Largest blood vessel

• aorta

• artery

• vein

• capillary

• vena cava

Which is not a function of blood in the circulatory system?

• provide oxygen to parts of the body

• carry away waste products

• provide nutrients for cells

• form urea

What are the 3 main components to the circulatory system?

• blood

  blood vessels

  lungs

• blood

  blood vessels

  heart

• blood

  veins

  lungs

• arteries

  blood vessels

  lungs

How many compartments are there in the heart?

• 3

• 5

• 8

• 4

What do valves do in the heart?

• pump blood through the veins

• nothing

• stop blood flowing backward

• block the blood

Blood returning to the heart from the lungs will be full of ______

Which is not a type of blood vessel?

• artery

• vein

• marrow

• capillary