PSIO 201 : Superficial_Back_Muscles_Exam_Study_Guide
Document Summary
Superficial responsible for moving the shoulder. Intermediate responsible for moving the thoracic cage. Deep responsible for moving the vertebral column. The deep muscles are intrinsic muscles because embryologically they develop in the back. The superficial and intermediate muscles are extrinsic muscles because they do not develop in the back. The superficial back muscles lie under the skin, as well as under the superficial fascia. They attach to the bones located in the shoulder clavicle, scapula and humerus. These muscles are responsible for moving the upper limb of the body. The muscles that make up the superficial back muscles are the latissimus dorsi, levator scapulae and rhomboids. The most superficial are the trapezius and the latissimus dorsi. The trapezius covers both the rhomboids and the levator scapulae. Trapezius muscle - flat, triangular in shape, broad. Its origin comes from the skull, ligamentum nuchae and spinous processes of the cerebral vertebrae 7 through thoracic vertebrae 12.
