Shoulder Anatomy Anterior

The shoulder is the group of structures in the region of the joint. The following is an overview of the shoulder muscle anatomy.

Anatomical Chart Set Of Muscular Skeletal Anterior And Posterior Views 2 Matte Finish Charts Of Heavy Duty Paper

Learn about these muscles their origin and insertion points and their functional anatomy.

Shoulder anatomy anterior. The deepest layer includes the bones and the joints of the shoulder. Plus exercises for training them. The shoulder is one of the largest and most complex joints in the body.

Nerves carry signals from the brain to the muscles to move the shoulder and carries signals from the muscles back to the brain about pain pressure and temperature. In human anatomy the shoulder joint comprises the part of the body where the humerus attaches to the scapula the head sitting in the glenoid cavity. In this condition the rotator cuff is unable to support the glenohumeral joint thereby causing pain in the biceps and the shoulder.

On the anterior side of the shoulder the coracobrachialis serratus anterior pectoralis major and pectoralis minor muscles work as a group to flex and adduct the scapula and humerus anteriorly toward the sternum. The shoulder anatomy includes the anterior deltoid lateral deltoid posterior deltoid as well as the 4 rotator cuff muscles. The clavicle is an s shaped bone that forms the anterior portion of the shoulder girdle that keeps the arm away from the trunk allowing it to move freely.

The nerves supply all the structures above and make them work. Shoulder injuries like fractures bone breakage injured tendons or muscles are the typical causes of anterior shoulder pain. Repetitive strain on the muscles like lifting heavy objects or participating in sports that may strain the shoulder joints is another potential cause and arthritis symptoms in the shoulder can also result in pain that radiates from the shoulder to the neck.

The tendons and the muscles come next. The anterior shoulder pain usually develops when injury or inflammation occurs in the tendons that are attached to the shoulder joint. Located superior to the shoulder joint the deltoid muscle works with the supraspinatus to abduct the arm at the shoulder.

The shoulder joint is formed where the humerus upper arm bone fits into the scapula shoulder blade like a ball and socket. Nerves and blood vessels supply the muscles and bones of the shoulder. It stabilizes the shoulder and holds the head of the humerus in the glenoid a shallow cavity in the scapula.

The collection of muscles and tendons in the shoulder is known as the rotator cuff. The next layer is made up of the ligaments of the joints. The muscles of the rotator cuff include the suprasinatus infraspinatus teres minor and subscapularis.

The clavicle has 2 articulations the sternoclavicular joint and the acromioclavicular joint.

Muscles Of The Anterior Thorax And Shoulder Diagram Quizlet