Question

vessels have thick walls and
narrow lumen.​

Answer 1

Answer:

Yes and they are composed of three tunics known as the tunica intima, tunica media, and tunica externa. and the lumens are narrower in veins than arterys

Answer 2

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Brother/Sister your correct answer will be:-

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$\pink{꧁Hopes\:so\:that\:this\:will\:help\:you,꧂}$

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✌︎Thanking you, your one of the Brother of your 139 Crore Indian Brothers and Sisters.✌︎

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