1. Chapter 5 The Skeletal System

2. The Appendicular Skeleton
Limbs (appendages)
Pectoral girdle
Pelvic girdle
126 Bones

3. The Appendicular Skeleton

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

5. Bones of the Shoulder Girdle

6. Bones of the Shoulder Girdle

7. Scapula (shoulder blade)
Glenoid cavity- creates a place for the head of the humerus to fit (socket)
3 borders- Superior, vertebral (medial), axillary (lateral)
Spine is a large ridge on posterior side, provides for large area of muscle attachment
Acromion process- acromioclavicular joint (A-C joint)
Corocoid process- helps in stabilizing the A-C joint

8. Bones of the Upper Limb
The arm is formed by a single bone
Humerus

9. Humerus Greater tubercle Lesser tubercle Head of humerus
Olecranon fossa
Epicondyles
Condyles

10. Bones of the Upper Limb
The forearm has two bones
Ulna
Radius

11. Ulna Olecranon process: funny bone; point of elbow
Styloid process: site of muscle attachment

12. Radius Radial tuberosity: site of attachment for the bicep
Ulnar notch: point of articulation with the Ulna
Styloid process

13. Bones of the Upper Limb The hand Carpals (8) – wrist
Metacarpals (5) – palm
Phalanges (14) – fingers