Blood Vessels

Question 1

Name one constant found in all blood vessels

Answer 1

All vessels contain a central lumen (cavity)

Question 2

Name the three components of an artery

Answer 2

1. an outer layer of connective tissue containing elastic fibres (for structure)
2. A middle layer containing smooth muscle with more elastic fibres (allows for high pressure)
3. Inner endothelium layer (lines the central lumen)

Question 3

Name the components of a vein

Answer 3

1. An outer layer of connective tissue containing elastic fibres (much thinner than those of arteries)
2. Inner endothelium layer (lines the central lumen)

Question 4

What feature of a vein makes it unique?

Answer 4

It has valves to prevent the back flow of blood

Question 5

In what direction do arteries carry blood?

Answer 5

Away from the heart and towards the body cells

Question 6

In what direction do veins carry blood?

Answer 6

Towards the heart and away from the body cells

Question 7

What are varicose veins?

Answer 7

When the valves in the veins break and can’t keep blood flowing upwards

Question 8

Name the components of a capillary

Answer 8

1. Inner endothelium layer

Question 9

Where are capillaries most likely to be found?

Answer 9

Located at organs