Question

Give the structural differences between an artery and a vein.

Answer 1

Artery	Vein
An artery is a vessel which carries blood away from the heart towards any organ.	A vein is a vessel which conveys the blood away from an organ towards the heart.
The artery has thick muscular walls.	The vein has thin muscular walls.
It has a narrow lumen.	It has a broad lumen.
There are no valves.	Thin pocket-shaped valves are present in the veins.
Arteries progressively decrease in size and branch to form arterioles. Arterioles further break up to form capillaries.	Capillaries unite to form branches called Venules. Venules further unite to form veins.