External Obliques

The obliques wrap around the trunk on each side to form our waists and join to the linea alba, a band of connective tissue running down the front of the abdomen. They help us to side bend and rotate the body.

Origin

  • Lowest 8 ribs.  

Insertion

  • Front 1/2 of the iliac crest.
  • Linea alba.  

Actions

  • Contraction of one side alone laterally bends the trunk to that side and rotates the trunk to the other side.
  • Compresses the abdomen and supports the abdominal viscera.

Innervation

  • Ventral rami of thoracic nerves.  

Daily uses

  • Raking leaves.  

Example exercises

Related injuries

Related muscles