Principles of Anatomy and PhysiologyTwelfth Edition

Chapter 7

The Skeletal System:

The Axial Skeleton

Copyright © 2007 by John Wiley & Sons, Inc.

Gerard J. Tortora &

Bryan H. Derrickson

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Table 9.1

Table 10.1

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Bone Classification

• Bones are classified according to shape• Long bonesLong bones are long with expanded ends, Ex:

forearm and thigh bone• Short bonesShort bones are cube like, Ex: wrist, ankle• Flat bonesFlat bones are broad and plate like, Ex: ribs,

scapulae, and some skull bones• Irregular bonesIrregular bones vary in shape, Ex: vertebrae• SesamoidSesamoid or round bones are small bones

embedded in tendons, Ex: kneecap (patella)