Appendicular Skeleton Upper Appendicular Skeleton Bone Lower Appendicular
Appendicular Skeleton Upper Appendicular Skeleton Bone Lower Appendicular Skeleton Bone Clavicle Ischium/Pubis Scapula Ilium Humerus Femur Radius Tibia Ulna Fibula Carpals Tarsals Metacarpals Metatarsals Phalanges Similarities Differences
Pectoral Girdle • Clavicle – collarbone – Anterior attachment (? ) – Posterior attachment (? ) • Scapula – shoulder blades – Posterior attachment (? ) – Spine – divides posterior surface into 2 sections – Coracoid process (“Corac” = ? ) – curves to clavicle – Acromion process – forms tip of shoulder – Glenoid cavity (or fossa) – depression that articulates with head of humerus
Upper Limb • • • Humerus Radius Ulna Carpals Metacarpals Phalanges
Humerus • • Head fits into glenoid cavity of scapula Greater tubercle – lateral process Lesser tubercle – more anterior process Intertubercular groove – narrow furrow “between tubercles” • Deltoid tuberosity – v-shaped, rough area where _____ muscles attach to humerus • Olecranon fossa – posterior depression that receives an ulnar process when elbow is straightened • Coronoid fossa – anterior depression that receives a radial process when elbow is bent
Radius • Shorter bone of lower arm • Located on thumb side of arm • Disc-like head articulates with humeru and with radial notch of the ulna (so your arm can rotate) • Radial tuberosity, a process below the head, provides attachment for biceps • Styloid process – at distal end; attachment for wrist ligaments
Ulna • Longer than radius • Overlaps distal end of humerus posteriorly • Proximal end has a wrenchlike opening called the trochlear notch (articulates w/humerus) – Oleacronon process – top process – Coronoid process – bottom process – Radial notch – just below trochlear notch • Head – at distal end; articulates with ulnar notch of radius • Styloid process – attachment for wrist
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