1. The Skeletal System

2. The Appendicular Skeleton
Composed of 126 bones
Limbs (appendages)
Pectoral girdle
Pelvic girdle

3. The Appendicular Skeleton
Figure 5.6a

4. The Appendicular Skeleton
Figure 5.6b

5. The Pectoral (Shoulder) Girdle
Composed of two bones
Clavicle—collarbone
Scapula—shoulder blade
These bones allow the upper limb to have exceptionally free movement

6. Bones of the Shoulder Girdle
Figure 5.21a

7. Bones of the Shoulder Girdle
Figure 5.21b

8. Bones of the Shoulder Girdle
Figure 5.21c–d

9. Bones of the Upper Limbs
Humerus
Forms the arm
Single bone

10. Bones of the Upper Limbs
Figure 5.22a–b

11. Bones of the Upper Limbs
The forearm has two bones
Ulna
Medial bone in anatomical position
Radius
Lateral bone in anatomical position

12. Bones of the Upper Limbs
Figure 5.22c

13. Bones of the Upper Limbs
The hand
Carpals—wrist
Metacarpals—palm
Phalanges—fingers

14. Bones of the Upper Limbs
Figure 5.23