Musculus obliquus externus abdominis

Origin: on the eight lower ribs.

Insertion:
 * labium externum cristae iliacae;
 * linea alba (via Rectus sheath of musculus rectus abdominis).

Innervation:
 * nervi intercostales (5.–11.);
 * nervus subcostalis.

Function:
 * bends spine;
 * changes the tilt of the pelvis;
 * participates in the abdominal press;
 * rotates the spine

Formations on the obliquus externus abdominis muscle:
 * aponeurosis musculi obliqui externi: the tendon into which the muscle passes forward;
 * inguinal ligament: lower thickening of the aponeurosis;
 * anulus inquinalis superficialis: entrance to inguinal canal.