Pyramidalis muscle

The pyramidalis is a small triangular muscle, anterior to the rectus abdominis muscle, and contained in the rectus sheath.Right hip bone viewed from outside, showing a small line where the pyramidalis attaches The pyramidalis is a small triangular muscle, anterior to the rectus abdominis muscle, and contained in the rectus sheath. Inferiorly, the pyramidalis attaches to the pelvis in two places: the pubic symphysis and pubic crest, arising by tendinous fibers from the anterior part of the pubis and the anterior pubic ligament. Superiorly, the fleshy portion of the pyramidalis passes upward, diminishing in size as it ascends, and ends by a pointed extremity which is inserted into the linea alba, midway between the umbilicus and pubis.