PATHOLOGY

Detailed explanation-1: -Arteries have thick, elastic and muscular walls. Arteries are the first vessels that the heart pumps blood through, they experience the highest blood pressure, so they have thick elastic walls to withstand the high pressures. Veins have thin and non-elastic walls.

Detailed explanation-2: -Walls of the arteries are thick because they have to withstand the high pressure released from the heart during the process of pumping the blood. Therefore, the thick walls of the arteries help in maintaining the blood pressure simultaneously by controlling blood flow.

Detailed explanation-3: -Since the blood pumped from the heart into the arteries flows at higher pressure than the blood in veins, hence arteries need to have thicker walls or else the high blood pressure might cause them to burst.