The abdomen (human anatomy) - picture, function, parts, The abdomen (commonly called the belly) is the body space between the thorax (chest) and pelvis. the diaphragm forms the upper surface of the abdomen. at the level of. Muscular system - muscles human body, The muscular system is responsible for the movement of the human body. attached to the bones of the skeletal system are about 700 named muscles that make up roughly. Ebay - electronics, cars, fashion, collectibles, coupons, Buy and sell electronics, cars, fashion apparel, collectibles, sporting goods, digital cameras, baby items, coupons, and everything else on ebay, the world's online.