Blood veins in the smooth muscles of the rectum and anus walls make up piles. They are an important element of anatomy, and they are found where the tiny arteries and veins meet. Smooth muscle and connective tissue cushion them, and they're classed according to where they are in relation to the pectinate line, which divides the upper 2/3 and lower 1/3 of the anus. Because of the different types of cells that line the hemorrhoids and the nerves that produce sensation, this is a major anatomical distinction. For more details please contact us! 9873996601