This is the front side of the manikin model depicting the quadratus lamborium which is the main lower part of the abdominal muscles trailing down to the pelvic and pubic area. These muscles contract in sections to allow the body to move the torso towards the legs and also acts as a defense cover for the many organs that rest between the navel and the pubis. To the left on the immediate bottom from the quadratus lamborium are the internal obliques with the external obliques directly above them. These muslces allow the torso to twist from side to side and stream is a spiral curve from the ribs to the pelvis. Above the quadratus lamborium is the rectus abdominus which rests on the navel area of the bottom of the front of the rib cage. these muscles, like the lower abs, contract and allow for the abs to have a strong anchor to the rib cage while protecting the bottom part of the rib cage.