The heart and blood vessels comprise the two elements of the cardiovascular system that work together in providing nourishment and oxygen to the organs of the body. The activity of these two elements is also coordinated in the body's response to stress.
graft vs fistula. A graft is usually in a horse-shoe or letter C shape, and is normally firmer to the touch. Fistulas usually run up and down and are more squiggly shaped, with bumps (pseudo anurisms) and softer to the touch. Here are some good pics of fistulas. For some reason, I could not find any pics of grafts on the net.
A fistula is a passage from your kidney that allows kidney dialysis. A fistulagram is an X-ray procedure to look at the blood flow and check for blood clots or other blockages in your fistula. Blood clots or blockages may interfere with your dialysis. The fistulagram helps the doctor find any blockages.