The Latissimus dorsi muscle is one of the largest in the body. It is a powerful extensor muscle of the arm and is used extensively in chinning and climbing. They are commonly known at the lats.

  • Posterior crest of the ilium (via the Thoracolumbar fascia)
  • Posterior sacrum
  • Spinous processes of T7-L5


  • Intertubercular groove (between the greater and lesser tuberosities) of the humerus


  • Extension
  • Internal rotation
  • Adduction

Shoulder Joint Muscles:


  • Thoracodorsal nerve

Daily uses

  • Pushing on the arms of a chair when standing up

How can I stretch it?

How can I strengthen it?

More Human Muscles: