1. Appendicular Skeleton

2. 126 bones – suspended by girdles from axial skeleton Designed for movement Pectoral girdle – 4 bones Upper extremity -Arm – 1 bone - forearm – 2 bones - hand = wrist, palm & fingers – 27 bones [each]

3. Pelvic Girdle – 2 bones Lower Extremity – leg – 1 bone - lower leg – 2 bones - foot = ankle, instep & toes – 26 bones [each ] - Patella – 2 bones *Pelvic or Hip Girdle: Attaches the lower extremity to the axial skeleton Provides support for body weight

4. Hip / Coxal bones [ ossa coxae, innominate bones] Ilium – ASIS, PSIS Ischium - tuberosity Pubis - rami Symphysis pubis Obturator foramen Acetabulum

7. Lower Extremity Leg [thigh] – femur Head Fovea capitis Neck Trochanters – greater/lesser Condyles – medial/lateral Epicondyles

9. Lower Extremity *Leg – region between knee and ankle Fibula – lateral bone Tibia – medial bone Malleolus Condyles – medial/lateral Tibial tuberosity

11. Patella [kneecap] a flat, triangular sesamoid bone Enclosed within the quadriceps tendon

12. Ankle or Tarsus Contains 7 tarsal bones Calcaneous = heel bone Talus Cuboid Navicular Cuneiforms – lateral, intermediate & medial

13. Foot Metatarsals – not named, but numbered 1 – 5 starting at medial side Toes – phalanges or digits: 3 bones [proximal, distal & middle] for each toe, except big [great] toe which has 2 [no middle phalanx]

14. Pectoral or Shoulder Girdle Clavicle [collarbone] – ‘S’ shaped bone * most frequently fx’d bone of body Scapula [shoulder blade] – thin, flat, triangular bone. Acromion Spine Coracoid process Gleniod fossa/cavity

18. Upper Extremity Arm [brachium] humerus Head Tubercles – greater/lesser Epicondlyes – medial/lateral Olecranon fossa Capitulum Trochlea

19. Upper Extremity *forearm – region between elbow and wrist Ulna Olecranon process Radius head Styloid process

22. Wrist or Carpus Contains 8 carpal bones Bound tightly by ligaments Arranged in 2 rows Scaphoid Trapezium Lunate Trapezoid Triquetral Capitate Pisiform Hamate

24. Hand Metarcarpals – not named, but numbered 1-5 starting on lateral [thumb] side Fingers – phalanges or digits: 3 bones [proximal, distal & middle] for each finger, except thumb, which has 2 [ no middle phalanx]