Summary
| Location: | In the back, spanning from the lower back to the upper arm, forming a large, triangular muscle. |
Information
| Group: | Shoulder |
| Side(s) of body: | Back, Front |
| Function/Action: | Shoulder Extensor, Shoulder Adductor, Shoulder Medial Rotator, Trunk Stabiliser |
Details
| Joint: | Shoulder |
| Bone: | Humerus, Thoracic Vertebrae, Lumbar Vertebrae |
| Origin: | Spinous processes of lower thoracic and all lumbar vertebrae, iliac crest. |
| Insertion: | Floor of intertubercular sulcus of humerus. |