why are the arteries have thick walls
Well! it's very simple!
You know that arteries carry blood away from the heart, i.e. from heart to the rest of the body. The thick walls of arteries enable the heart to pump large amount of blood from the heart to the body without the arteries bursting!
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forget what i said i am wrong
ARTERIES hav thick wallss becoz the blood is flowin wit a high pressure an tis exerts a pressre on d walls of d arteris soif the walls r thin the presure exertd cn cause d walls 2 tear
no arteries dont have any walls you are talking about veins got anjoo
the arteries also have 2 resist the great pressure exerted by the blood on walls