Final answer:
The inferior angle of the scapula is a landmark where the medial and lateral borders meet and serves as an attachment site for muscles controlling shoulder and upper limb movements.
Step-by-step explanation:
The inferior angle of the scapula is a significant landmark located at the junction of the medial and lateral borders of the scapula. It is the most inferior point of the triangular-shaped bone, providing an attachment site for various muscles that facilitate shoulder and upper limb movements. The inferior angle plays a crucial role in movements such as the inferior rotation of the scapula during upper limb adduction. This movement involves the glenoid cavity moving downwards while the medial end of the scapular spine moves upwards. Understanding the anatomy and function of the inferior angle is essential for comprehending the mechanics of the shoulder joint and its associated muscular actions.