CHARACTERISTICS AND PROPERTIES OF BONE Flashcards
What are the five functional roles of the skeletal system?
- Support of body
- Protection of internal organs
- Levers for skeletal muscles to act
- Production of blood cells through bone marrow
- Storage of minerals
What kind of material is bone?
Composite material
What is composite material?
Two or more materials come together to form something
What two materials is bone made up of?
70% calcium phosphate crystals (inorganic) and 30% collage fibers (organic)
What are the two characteristics of calcium phosphate crystals (inorganic)?
- Very strong but inflexible
- Ability to resist compressive stress
What are the two characteristics of collagen fibers (organic)?
- Tough and flexible
- Ability to resist stretching, bending and twisting stresses
What can bone do under the influence of external forces?
Since bone is responsive material, bone remodels (changes shape overtime)
What does it mean when bone is anisotropic?
Properties will vary depending on orientation of material; different strength and hardness properties depending on its orientation