Upper Back Muscles Diagram : Upper Back Muscle Anatomy Anatomy Drawing Diagram. There are 12 vertebrae in the thoracic spine. Both the deltoid and the trapezius are firmly attached to the spine of the scapula. The four muscle groups that together make up the deep muscle group are the segmental muscles, the transversospinales, the erector spinae, and the spinotransversales. The back muscles are divided into two large groups: Intermediate back muscles and c.
Holding a dumbbell in each hand, start in a high plank position with your wrists under your shoulders and your head, hips, and heels in a straight line. The extrinsic (superficial) back muscles, which lie most superficially on the back. There are any number of reasons your upper and middle back can hurt. Limited range of motion or a gradual decrease in muscle movement. The rotator cuff is a group of four muscles and tendons that surround the glenohumeral joint.
