1. The Appendicular Skeleton Salt Lake City Community College Human Anatomy Laboratory

2. THE SKELETAL SYSTEM The Appendicular Skeleton 2 pairs of limbs and 2 girdles Pectoral (shoulder) girdle attaches upper limbs Pelvic (hip) girdle secures lower limbs 3-Segmented limbs  Upper = arm Arm Forearm Hand  Lower = leg Thigh Leg Foot

4. Pectoral Girdle (Shoulder Girdle) Clavicle – anterior: collar bone Scapula – posterior: shoulder blade

5. Scapula Glenoid cavity articulates with the humerus Acromium articulates with clavicle Coracoid process projects anteriorly

6. Upper extremity Arm or Brachium = upper arm  Between shoulder and elbow (humerus) Forearm or Antebrachium  Radius & ulna Hand includes:  Wrist (carpus)  Palm (metacarpus)  Fingers (phalanges)

7. Arm  Humerus is the only bone  Head of humerus fits into glenoid cavity of scapula  Distal & medially, trochlea articulates with the ulna  Distal & laterally capitulum articulates with the radius  Medial & lateral epicondyles

8. Right humerus, anterior view

9. Right forearm bones, anterior view

12. Hip bone (os coxae): 3 separate bones in childhood which fuse Ilium Ischium Pubis

13. Lower limb Thigh: femur Leg (lower leg)  Tibia  Fibula Foot

14. Right femur, anterior view

15. Right lower leg, anterior view

16. Right foot, superior (dorsal) view and inferior (plantar) view