External Obliques

External Oblique Muscle

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 - Twisting crunches.

Related muscles categories: