Pelvic muscle
Pelvis, in human anatomy, refers to a basin-shaped complex of bones that connects the trunk and the legs, supports and balances the trunk, and contains and supports the intestines, the urinary bladder, and the internal sex organs. The muscles that covers the area of pelvis area is known s pelvic muscles. The structure of pelvis consists of paired hipbones, which is connected in front at the pubic symphysis and behind by the sacrum; each is made up of three bones, they unite in early adulthood at a triangular suture. The ring made by the pelvis functions as the birth canal in females, the pelvic muscle shows immense flexibility. The pelvis also provides attachment for muscles that balance and support the trunk and move the hips, the legs, and the trunk. In the human infant the pelvis is narrow and nonsupportive, which develops with increasing age of a child.