BIOLOGY 220
ANATOMY & PHYSIOLOGY I
OBJECTIVES
Unit XII - SKELETAL SYSTEM
Introduction
- List and describe the structure, functions and locations of the skeletal
system.
- List the major cartilages of the human skeleton.
Bone Structure and Membranes
- Describe the structural components of long bones.
- Define and describe the membranes of the bone (periosteum and endosteum).
Chemical Composition of Bone
- Describe the organic components of bone.
- Describe the inorganic components of bone.
Bone Development
- Define intramembranous ossification.
- List and describe the steps of intramembranous ossification.
- Give examples of bones that develop by intramembranous ossification.
- Define endochondral ossification.
- List and describe the steps of endochondral ossification.
- Give examples of bones that develop by endochondral ossification.
Postnatal Bone Growth
- Define interstitial growth.
- Describe the steps of interstitial (in length) growth.
- Define and describe appositional (in width) growth.
Hormonal Regulation of Bone
- Explain how hormones regulate bone growth
- Growth hormone (GH)
- Thyroid hormones (T3 and T4)
- Sex hormones (testosterone and estrogens)
Bone Homeostasis:Remodeling and Repair
- Describe the functions of osteoblasts, osteoclasts, osteocytes (bone cells)
in bone deposit and resorption.
- Describe how hormones regulate bone remodeling.
- Describe how mechanical stress influences bone remodeling.
- Describe the steps of bone simple fracture repair.
Homeostatic Imbalances
- Describe the following bone disorders:
- Osteomalacia
- Osteoporosis
- Rickets
- Paget's disease