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Delve into the fascinating world of the appendicular skeleton, specifically focusing on the bones of the upper limbs. Learn about the composition and function of key bones like the humerus, ulna, and radius, as well as the intricate structure of the hand. Discover how the skeletal system facilitates movement and support in this region.
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The Appendicular Skeleton • Composed of 126 bones • Limbs (appendages) • 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 Girdle Figure 5.21a
Bones of the Shoulder Girdle Figure 5.21b
Bones of the Shoulder Girdle Figure 5.21c–d
Bones of the Upper Limbs • Humerus • Forms the arm • Single bone
Bones of the Upper Limbs Figure 5.22a–b
Bones of the Upper Limbs • The forearm has two bones • Ulna • Medial bone in anatomical position • Radius • Lateral bone in anatomical position
Bones of the Upper Limbs Figure 5.22c
Bones of the Upper Limbs • The hand • Carpals—wrist • Metacarpals—palm • Phalanges—fingers
Bones of the Upper Limbs Figure 5.23
