Bone and Skeletal Tissues

Skeletal Cartilages
1. Chondrocytes housed in lacunae in extracellular matrix
  1. Large Amounts of water
  2. lacks nerve fibers
  3. Avascular
  4. Surrounded by fibrous perichondrium
2. Hyaline
  1. Appear glassy
  2. Collagenous fibers
  3. Most abundant skeletal cartilages
  4. Flexible and resilient
  5. Articular, costal, respiratory and nasal cartilages
3. Elastic
  1. abundant elastic fibers w collagen fibers
  2. flexible
  3. Outer ear and epiglottis
4. Fibrocartilages
  1. Thick collagen fibers
  2. most compressible cartilages
  3. resist stretching
  4. intervertebral discs and knee joint cartilages
Classification of Bones
1. Long Bones
2. Short Bones
3. Flat Bones
4. Irregular Bones
Functions of Bones
1. Support
2. Protection
3. Movement: Levers
4. Mineral and growth factor storage
5. Blood cell formation: Hematopoieses (red marrow)
6. Triglyceride storage
7. Hormone production: osteocalcin
Bone Structure
1. Gross anatomy
  1. Compact Bone
  2. Spongy Bone
  3. Shaft
  4. Epiphyses
  5. Diaphyses
  6. Periosteum
  7. Endosteum
  8. Nutrient Foramina
  9. Red marrow
  10. Yellow marrow
  11. Markings
2. Microscopic anatomy
  1. Osteogenic Cells: Osteoprogenitor cells
  2. Osteoblasts
  3. Osteocyte
  4. Osteoclast
  5. Osteon
  6. Lamella
  7. Canals, Canaliculi
  8. Lacunae
3. Chemical composition
  1. Organic: Cells
  2. Inorganic: mineral salts: hydroxyapatites
Bone Development
Remodeling and Repair
Homeostatic Imbalances
Bone Markings

Resource summary

	Created by jennifer.hyland over 10 years ago