The Skeletal System

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
• Claviclecollarbone
• Scapulashoulder 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 5.21cd
9
Bones of the Upper Limbs

• Humerus
• Forms the arm
• Single bone

10
Bones of the Upper Limbs
Figure 5.22ab
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
• Carpalswrist
• Metacarpalspalm
• Phalangesfingers

14
Bones of the Upper Limbs
Figure 5.23