Question

Write four differences between artery and vein.

Answer 1

Arteries	Veins
1- Carries blood away from the heart for the distribution to various parts of the body.	1- Carries blood towards the heart from the different parts of the body.
2- Carries oxygenated blood (except pulmonary arteries).	2- Carries deoxygenated blood (except pulmonary veins).
3- Blood flows with more pressure and jerks.	3- Blood flows smoothly with less pressure.
4- It has thick, elastic walls with narrow lumen.	4- It has thin, less elastic walls with wide lumen.
5- Do not have valve	5- Have valve.
6- Backflow of blood due to lack of valve	6- No backflow of blood.
7- They retain their tubular form when empty.	7- They collapse when empty.