PATHOLOGY

Detailed explanation-1: -The coronary arteries branch off the aorta, which then branch into smaller arteries (arterioles) as they get farther from your heart. Veins: These blood vessels return oxygen-depleted blood to the heart. Veins start small (venules) and get larger as they approach your heart.

Detailed explanation-2: -False, arteries are thicker. Arteries become progressively smaller as blood flows away from the heart and into branches feeding other areas of the body.

Detailed explanation-3: -Capillaries. Capillaries, the smallest and most numerous of the blood vessels, form the connection between the vessels that carry blood away from the heart (arteries) and the vessels that return blood to the heart (veins).

Detailed explanation-4: -As the diameter of the blood vessels decreases, the velocity of blood flow also diminishes. Estimates are that about 10% to 15% of the total blood volume is contained in the arterial system. This feature of high systemic pressure and low volume is typical of the arterial system.