01 / Location & anatomical relationships
Over the back of the upper ribs.
02 / Structure & organization
The scapular spine separates supraspinous and infraspinous fossae posteriorly. The glenoid cavity articulates with the humeral head, while acromion and coracoid processes provide attachment and leverage points.
03 / Function
It helps form the shoulder joint and anchors many muscles.
04 / Mechanism
A shallow socket at its outer corner receives the head of the humerus. Muscles move the shoulder blade around the rib cage and stabilize it during reaching. This makes the arm's range of motion larger.
Part of a bigger picture
The scapula belongs in our bones & movement collection. Explore the nearby parts to see how this area of the body fits together.
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Connect structure with function
The scapula glides over the thoracic wall through muscular control rather than a conventional synovial joint at that surface. This movement expands the arm's reach.
Check your understanding
Locate the scapula in relation to its neighbors. Explain how the structural features described above support its function, then distinguish it from a nearby structure with a different role.
Keep learning
Continue with OpenStax Anatomy and Physiology for system-level study. This atlas is educational and has not undergone independent medical peer review.