Description
The extrinsic muscles are one of two subgroups of muscles of the back, the other being the intrinsic muscles. These muscles lie superficial to the thoracolumbar fascia and the intrinsic muscles of back. Overall, the extrinsic muscles of back are involved in movements of the pectoral (shoulder) girdle, arm, and ribs.
The extrinsic muscles of back consist of the:
- trapezius;
- latissimus dorsi;
- rhomboid major;
- rhomboid minor;
- levator scapulae;
- serratus posterior superior;
- serratus posterior inferior.
