Back Shoulder Muscle Anatomy. The intrinsic back muscles are found deeper to the extrinsic muscles separated from them by the thoracolumbar fascia. The superficial back muscles are situated underneath the skin and superficial fascia.
Anatomy As mentioned above the trapezius muscle is divided into 3 areas. The deltoid muscle is on the outside of your shoulder. They are the latissimus dorsi supraspinatus infraspinatus teres major and.
More commonly known as the shoulder blade the scapula is a flat triangular bone located in the upper back.
The deltoid teres major teres minor infraspinatus supraspinatus not shown and subscapularis muscles not shown all extend from the scapula to the humerus and act on the shoulder joint. These muscles are able to move the upper limb as they originate at the vertebral column and insert onto either the clavicle scapula or humerus. They are the latissimus dorsi supraspinatus infraspinatus teres major and teres minor. The deltoid teres major teres minor infraspinatus supraspinatus not shown and subscapularis muscles not shown all extend from the scapula to the humerus and act on the shoulder joint.
