d) They have thick elastic walls without valves inside, blood flows under high pressure and carries blood away from the heart to different parts of the body
Arteries are blood vessels, the network of pathways through which the oxygenated blood travels away from the heart to various cells, tissues and organs of the human body. Arteries are the main blood vessels that carry and transport oxygenated blood or oxygen-rich blood from the heart to other parts of the body. They are the strongest blood vessels with thicker walls and are muscular in nature. It consists of three distinct layers, which are rigid, thicker and highly muscular. Arteries are located deep within the body and are red in colour. These blood vessels are with high pressure and move in a downward direction from the heart to the body tissues.