What about Scapula Bone? Write down its features and Muscle attachments?
SCAPULA The Scapula is a thin bone placed on the posterolateral aspect of the thoracic cage.It has two surfaces, three borders , three angles and three processes. Features of Scapula: Surfaces: The Costal Surface is concave and is directed medially and forwards.It is marked by three longitudinal ridges.The part of the bone is rod-like.It acts as a lever for the action of seratus anterior. The Dorsal Surface gives attachment to the spine of scapula which divides the surface into Supraspinous and Infraspinous fossa. Borders: The Superior border is thin and shorter.It presents the suprascapular notch. The Lateral border is thick. It presents the infraglenoid tubercle. The Medial border is thin.It extends from the superior angle to the inferior angle. Angles: The Superior angle is covered by the trapezius. The Inferior angle is covered by latissimus dorsi. The Lateral or glenoid angle is broad and bears the glenoid cavity or fossa. Processes: The spinous process is a triangular plate o