AP BIOLOGY

Detailed explanation-1: -The main function of the arteries is to circulate or to carry oxygenated blood from the heart to different parts of the human body. 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.

Detailed explanation-2: -Answer and Explanation: The type of blood vessel is built to handle the highest pressure of any vessel in the cardiovascular system are the elastic arteries.

Detailed explanation-3: -Arteries are always under high pressure. To accommodate this stress, they have an abundance of elastic tissue and less smooth muscle. The presence of elastin in the large blood vessels enables these vessels to increase in size and alter their diameter.

Detailed explanation-4: -Arteries. An artery is a blood vessel that conducts blood away from the heart. All arteries have relatively thick walls that can withstand the high pressure of blood ejected from the heart.

Detailed explanation-5: -Arteries and arterioles have relatively thick muscular walls because blood pressure in them is high and because they must adjust their diameter to maintain blood pressure and to control blood flow.