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| Collar bone is superficial and runs horizontally along the top of the chest at the base of the neck |
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| The triangular-shaped bone of the upper back. The scapula has several fossae, corners and ridges that serve as attachment sites for sixteen muscles |
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| Superficial ridge located just off the top of the shoulder |
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| Long edge of the scapula that runs parallel to the vertebral column. It can measure five to seven inches in length, depending on body type |
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| Two angles of the scapula, one on either end of the medial border. The inferior angle is superficial and located at the medial border's lower end |
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| Located at the superior end of the medial border. It serves as an attachment site for the levator scapula muscle |
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| Extends superiorly and laterally from the inferior angle toward the axilla or "armpit? |
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| Located at the most superior aspect of the lateral border |
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| Triangular area inferior to the spine of the scapula; it is filled with the infraspinatus musscle |
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| Is located superior to the spine of the scapula. It is small in size, yet quite deep |
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| Located on the scapula's anterior (or underside) surface, next to the rib cage |
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| Lateral aspect of the spine of the scapula and is located at the top of the shoulder |
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| The superficial clavicle lies horizontally across the upper chest and has a gentle "S" shape |
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| Acromioclavicular (A/C) Joint |
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| The small articulation between the acromion of the scapula and the acromial end of the clavicle |
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| Sternoclavicular (S/C) Joint |
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| The articulation between the sternal end of the clavicle and the sternum |
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| The scapula is the beak-like projection found inferior to the shaft of the clavicle |
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| Located on the lateral side of the mid-humeral shaft |
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| Located inferior and lateral to the acromion |
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| Smaller than the greater tubercle and is an attachment site for the fourth rotator cuff muscle- subscapularis |
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| Situated between the greater and lesser tubercle, and is roughly a pencil's width in diameter |
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Triangle-shaped deltoid is located on the cap of the shoulder.
Deltoid fibers can be divided into tree segments: the anterior, middle and posterior fibers |
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lies superficially along the upper back and neck.
Trapezius fiber can be divided into three groups: upper (descending) fibers, middle fibers and lower (ascending) fibers. |
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| The broadest muscle of the back |
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| Teres major is called "lat's little helper" because it is a complete synergist with the latissimus dorsi |
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| Latissimus Dorsi and Teres Major |
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| Are sometimes called the "handcuff muscles" since their actions collectively bring the arms into the "arresting" position |
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| Supraspinatus, Infraspinatus, Teres Minor, and Subscapularis |
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| Located in the supraspinous fossa, deep to the trapezius' upper fibers |
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| The flat, convergent belly of the infraspinatus is located in the infraspinous fossa |
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| Small muscle squeezed between the infraspinatus and teres major |
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| Located on the scapula's anterior surface, is sandwiched between the subscapular fossa and serratus anterior muscle |
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| The tendons of the rotator cuff muscles can be difficult to access in anatomical position |
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| The rhomboid muscles are located between the scapula and vertebral column. Named for their geometric shape, the major is larger than the minor. |
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| Located along the lateral and posterior sides of the neck. |
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| Is a broad, powerful muscle located on the chest. |
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| Lies next to the rib cage deep to the pectoralis major |
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| Located underneath the clavicle |
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| Lies superficially on the anterior arm |
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| The only muscle located on the posterior arm. The triceps has three heads: long, lateral and medial. |
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| Is a small, tubular muscle located in the axilla |
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| Is the cone-shaped area commonly called the armpit. It is formed by four walls: lateral wall, posterior wall, anterior wall, and medial wall |
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| Coracoclavicular Ligament |
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| Composed of two smaller ligaments: the trapezoid and conoid |
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| Unlike most ligaments which hold two bones together, the coracoacromial ligament attaches the scapula's coracoid process to its acromion |
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| Also known as the subdeltoid bursa, this sizable fluid sac has two major sections.The lateral portion creates a smooth surface for the acromion and deltoid to glide over the head of the humerus and rotator cuff tendons. The medial part cushions the coracoacromial ligament from the supraspinatus tendons |
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| Are located in the axilla |
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| Continuation of the axillary artery and runs between the biceps and triceps brachii |
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