HN210 Midterm: Shoulder - Bones & Joints
Document Summary
Includes the deltoid, pectoral, scapular + lateral part of cervical region. Pectoral (shoulder) girdle: arm (l. brachium) Between the shoulder & elbow consists of anterior & posterior regions of arm: forearm (l. antebrachium) Between the elbow & wrist consists of anterior & posterior regions of forearm: hand (l. manus) Composed of the wrist, palm, dorsum of hand, digits. Pectoral (shoulder) girdle: made of clavicle & scapula, create an incomplete ring, the clavicle articulates with the sternum & scapula, articulating means that the bones are moving relative to each other at a joint. The actual surfaces of the bones that might touch the other are the articulating surfaces, and the cartilage covering those surfaces is called articular cartilage: within, there is the sternoclavicular joint, glenohumeral joint & acromioclavicular joint. Important movements of pectoral girdle are scapular movements: elevation & depression, protraction (lateral + forward), retraction (medial + backward) & rotation of the scapula.
