Muscle Name: Latissimus Dorsi (Back)
Medical Name:
- Latissimus Dorsi
Other Names:
- Lats
- Broadest Muscle of the Back
Head:
- None (Single muscle with broad origin)
Movement:
- Extension of the shoulder
- Bringing the arm backward
- Adduction of the humerus
- Bringing the arm towards the body
- Medial rotation of the humerus
- Rotating the arm inward
Attachment:
- Origin:
- Spinous processes of T7-L5 vertebrae
- Thoracolumbar fascia
- Iliac crest
- Inferior 3 or 4 ribs
- Inferior angle of the scapula
- Insertion:
- Floor of the intertubercular sulcus (bicipital groove) of the humerus
Related Muscles:
- Teres Major
- Rhomboids
- Trapezius
- Erector Spinae
- Pectoralis Major
- Subscapularis