Artery

(i) Thick-walled blood vessel

(ii) Blood flows from the heart to different parts of the body

(iii) Blood flows with high pressure with a high speed

(iv) Valves are absent

Vein

• Thin walled blood vessel.

• Brings blood from the different parts of the body to the heart.

• Blood flows with low pressure and with a low speed.

• Contains valves which permit blood flow only towards the heart.