9.3 blood vessels

Question 1

artery

Answer 1

• carries blood from heart to rest of the body
• carries mostly oxygenated blood
• have high pressure

arteriole (s) —> artery (m) —> aorta (L)

Question 2

veins

Answer 2

• carries blood from rest of the body to the heart
• carries mostly deoxygenated blood
• have low pressure
• have valves : prevent back-flow of blood

venule (s) —> vein (m) —> vena cava (L)

Question 3

capillary

Answer 3

• connects arteries and veins
• carries both oxygenated and deoxygenated blood
• have low pressure

Question 4

artery structure

Answer 4

• small lumen
• thick wall

Question 5

vein structure

Answer 5

• large lumen
• thinner wall than artery

Question 6

capillary structure

Answer 6

• very small lumen
• very thin wall (one cell thick)