Appendicular Skeleton Upper Appendicular Skeleton Bone Lower Appendicular Skeleton Bone SimilaritiesDifferences ClavicleIschium/Pubis ScapulaIlium HumerusFemur RadiusTibia UlnaFibula CarpalsTarsals MetacarpalsMetatarsals Phalanges

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

Label Diagrams

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 ligaments

Label Diagrams

Wrist Wrist made of 8 carpal bones – “Some lovers try positions that they can’t handle.” – Scaphoid Lunate Triquetrum Pisiform Trapezium Trapezoid Capitate Hamate

Hand 5 metacarpals – Numbered 1-5, starting at thumb – Bones between wrist (carpals) and fingers (?) – Rounded distal ends form knuckles Each finger, except thumb, has 3 phalanges: – Proximal phalanx – Middle phalanx – Distal phalanx – Thumb only has no middle phalanx.