DescriptionA deep abdominal muscle supporting trunk rotation, side bending, and pelvic control.Origintop of the hip bone, inguinal ligament, thoracolumbar fasciaInsertionRibs 10-12, linea alba, pubic areaPrimary ActionsTrunk flexion, Twist/rotate the torso (same side), Bend the torso to the sideAlso Known Asinternal obliques, deep side abs 
