The pectoral girdle is a bony structure that connects the upper limbs to the axial skeleton. It consists of two main components: the clavicle (collarbone) and the scapula (shoulder blade). This girdle provides support and stability for the arms while allowing a wide range of motion. The pectoral girdle plays a crucial role in various activities, such as lifting and throwing. It helps anchor muscles that control arm movement, making it essential for tasks that require strength and coordination. Overall, the pectoral girdle is vital for upper body function and mobility.