A
ll of us have heard the expressions “bone tired” and “bag of
bones”
—rather unflattering and inaccurate images of one of our most phe-
nomenal tissues and our main skeletal elements. Our brains, not our bones, con-
vey feelings of fatigue. As for “bag of bones,” they are indeed more prominent in some
of us, but without bones to form our internal supporting skeleton we would all creep
along the ground like slugs, lacking any definite shape or form. Along with its bones, the
skeleton contains resilient cartilages, which we briefly discuss in this chapter. However,
our major focus is the structure and function of bone tissue and the dynamics of its for-
mation and remodeling throughout life.
Skeletal Cartilages
Describe the functional properties of the three types of cartilage tissue.
Locate the major cartilages of the adult skeleton.
Explain how cartilage grows.
6
Bones and Skeletal Tissues
Skeletal Cartilages
(pp. 173–174)
Basic Structure, Types, and Locations (p. 174)
Growth of Cartilage (p. 174)
Classification of Bones
(pp. 174–176)
Functions of Bones
(pp. 176–177)
Bone Structure
(pp. 177–183)
Gross Anatomy (pp. 177–179)
Microscopic Anatomy of Bone (pp. 179–182)
Chemical Composition of Bone (pp. 182–183)
Bone Development
(pp. 183–187)
Formation of the Bony Skeleton
(pp. 183–185)
Postnatal Bone Growth (pp. 185–187)
Bone Homeostasis: Remodeling and
Repair
(pp. 187–192)
Bone Remodeling (pp. 187–191)
Bone Repair (pp. 191–192)
Homeostatic Imbalances of Bone
(pp. 192–193)
Osteomalacia and Rickets (p. 192)
Osteoporosis (pp. 192–193)
Paget’s Disease (p. 193)
Developmental Aspects of Bones:
Timing of Events
(pp. 193–194)
Birth to Young Adulthood (p. 193)
Age-Related Changes in Bone (pp. 193–194)
173
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