Muscles / Back
Latissimus dorsi
- Back
- Back & spine
- Superficial layer
Also called lats.
Anatomy
- Origin
- Spinous processes of T7-T12, thoracolumbar fascia, iliac crest, inferior 3-4 ribs
- Insertion
- Floor of the intertubercular sulcus of the humerus
- Nerve
- Thoracodorsal nerve (C6-C8)
Actions
- Extends, adducts and medially rotates the humerus
- Raises the body toward the arms in climbing
- Depresses the shoulder girdle
Exercises that train it most
Also trained by
Notes
- Used as a tendon transfer and as a pedicled flap in breast reconstruction.
References (4)
- Standring S, ed. Elsevier. Gray's Anatomy: The Anatomical Basis of Clinical Practice. 42nd ed.
- Dalley AF, Agur AMR. Wolters Kluwer. Moore's Clinically Oriented Anatomy. 9th ed.
- Neumann DA. Elsevier. Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation. 3rd ed.
- Betts JG, Young KA, Wise JA, et al. OpenStax (free, openly licensed textbook). Anatomy and Physiology 2e