Shoulder Muscle Diagram Labeled

Free and printable shoulder muscle diagrams are available in the following list to help you study and understand the shoulder joint and its muscles. Start learning anatomy with the help of the diagrams below —all are printable and ready to get in one click!

The shoulder has about eight muscles that attach to the scapula, humerus, and clavicle. These muscles form the outer shape of the shoulder and underarm.

Anterior Shoulder Muscle Diagram
image source:

The muscles in the shoulder aid in a wide range of movement and help protect and maintain the main shoulder joint, known as the glenohumeral joint. You can see all of the muscles in the diagram. The largest of these shoulder muscles is the deltoid. This large triangular muscle covers the glenohumeral joint and gives the shoulder its rounded-off shape. Explore more about the shoulder joint and muscle in the following shoulder muscle diagrams labeled.

Right Shoulder Muscle Diagram
image source:
Shoulder Muscle Diagram Model
image source:

One important function of the deltoid is preventing joint dislocation when a person carries heavy objects. Contraction of each part of the deltoid assists in different movements of the shoulder – flexion (clavicular part), abduction (middle part), and extension (scapular part). The teres major attaches to the outer part of the back of the scapula, beneath the teres minor, and attaches to the upper part of the humerus.

Back Shoulder Muscle Diagram
image source:
Shoulder Muscle Diagram Exercises
image source:

The shoulder joint is vulnerable to dislocations from sudden jerks of the arm, especially in children before strong muscles have developed. Therefore, knowing the detailed part of the shoulder muscle is important to keep your shoulder from sudden injury or dislocation. Get started by studying these diagrams that we have provided above! Click, print, and share to your colleagues!