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Home > Anatomy & Physiology > Muscles > Latissimus Dorsi

Latissimus Dorsi

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.

Origin

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

Insertion

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

Actions

  • Extension
  • Internal rotation
  • Adduction

Innervation

  • Thoracodorsal nerve

Daily uses

  • Pushing on the arms of a chair when standing up

How can I stretch it?

How can I strengthen it?

Latissimus Dorsi




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