The Appendicular Skeleton

• Composed of 126 bones– Appendages (limbs)– Pectoral girdle– Pelvic girdle

The Appendicular Skeleton

Figure 5.6a

The Appendicular Skeleton

Figure 5.6b

The Pectoral (Shoulder) Girdle

• Composed of two bones– Clavicle—collarbone– Scapula—shoulder

blade• These bones allow the

upper limb to have exceptionally free movement

Bones of the Shoulder GirdleClavicle

Figure 5.21b

Bones of the Shoulder GirdleScapula Figure 5.21c–d

Bones of the Upper Limbs

• Humerus– Forms the arm– Single bone

Bones of the Upper LimbsUlna and Radius

• The forearm has two bones– Ulna• Medial bone in anatomical

position– Radius • Lateral bone in anatomical

position

Bones of the Upper LimbsCarpals, Metacarpals,Phalanges

• The hand– Carpals—wrist – Metacarpals—palm– Phalanges—fingers