NBATA > Education & Research > Glossary of Terms

Shoulder

Acromioclavicular (AC) Joint.: Area in the shoulder where the scapula and the clavicle intersect.
Biceps.: Muscles on the front of the upper arm responsible for flexing the elbow and shoulder.
Clavicle.: The collar bone.
Costochondral.: Cartilage that separates the bones of the rib cage.
Deltoid Muscles.: Muscles at the top of the shoulder that are responsible for moving the arm to the front, side and back of the body.
Glenoid Fossa.: A cavity of the scapula into which the head of the humerus fits to form the shoulder joint. The location of a shoulder dislocation or subluxation.
Humerus.: Bone of the upper arm that runs from the shoulder to the elbow.
Pectorals.: Chest muscles.
Rotator Cuff.: Group of four shoulder muscles responsible for moving the shoulder in internal and external rotation and assisting with overall shoulder stability.
Scapula.: Shoulder blade.
Sternoclavicular Articulation.: Area where the clavicle connects with the sternum.
Sternum.: The breast bone.
Trapezius.: Flat, triangular muscle covering the posterior surface of the neck and shoulder.
Triceps.: Muscle on the back of the upper arm that is responsible for extending the elbow and shoulder.
Xiphoid Process.: Tip of the sternum.