What are the differences between the structure of arteries and veins?

Question

What are the differences between the structure of arteries and veins?

Answer 1

Arteries - transports oxygenated blood from the heart (except in pulmonary artery which contains deoxygenated blood). Arteries have:

-thick muscular wall

-much elastic tissue

-small lumen relative to diameter

-not permeable

-valves in pulmonary artery and Aorta only

-blood under high pressure (10-16kPa)

-blood moves in pulses

-blood flows rapidly

Veins transport deoxygenated blood back to the heart (except in pulmonary vein which carries oxygenated blood)

-thin muscular wall

-little elastic tissue

-large lumen relative to diameter

-not capable of constriction

-not permeable

-valves throughout all veins

-blood under low pressure (1kPa)

-no pulses

-blood flows slowly

Hope that helps

Answer 2

Arteries: flow from heart, thick elastic muscle layer, no valves, oxygenated

Veins: flow to heart, thin elastic muscle layer, has valves, deoxygenated