Other Names

• Back (Middle, Outer)
• Lats

Heads

• Latissimus Dorsi

Movement

Shoulder

• Adduction
• Extension
• Internal Rotation
• Transverse Extension

Scapula (Assists)

• Depression
• Downward Rotation
• Adduction

Attachments

Origin

• Ilium
  • Posterior Crest
• Sacrum (Posterior)
• Vertebral Column (Lateral Surface)
  • Lumbar Vertebrae (L1-5)
  • Thoracic Vertebrae (T7-12)
• Ribs (Posterior)
  • Lower 3 or 4 ribs

Insertion

• Humerus (Proximal Anterior/Medial)
  • Intertubercular Groove (Medial Side)

Related Muscles

• Teres Major