PATHOLOGY

Detailed explanation-1: -There are five types of blood vessels: the arteries, which carry the blood away from the heart; the arterioles; the capillaries, where the exchange of water and chemicals between the blood and the tissues occurs; the venules; and the veins, which carry blood from the capillaries back towards the heart.

Detailed explanation-2: -Blood vessels are a network of tubular structures, responsible for transporting blood around the body, to the tissues and organs. Blood is carried away from the heart by arteries, and back to the heart via veins.

Detailed explanation-3: -The vascular system, also called the circulatory system, is made up of the vessels that carry blood and lymph through the body. The arteries and veins carry blood throughout the body, delivering oxygen and nutrients to the body tissues and taking away tissue waste matter.

Detailed explanation-4: -Answer and Explanation: The correct answer is option E. Veins are blood vessels that carry blood back to the heart. The superior and inferior vena cava, which are the larges veins in the body, drains in the left atrium of the heart, while the pulmonary veins drain in the right atrium.