Seeleys Anatomy and Physiology Chapter 6 Skeletal System (not done)
Penetrates the outer layer of the perichondrium but do not enter the cartilage matrix:
Blood vessels and nerves
Perichondrium
A double layered connective tissue sheath covering most cartilage.
Ligaments
Attach bone to bone
Ligaments
Attach bone to muscle
3 types of Cartilage
1. Hyaline cartilage 2. Fibrocartilage 3. Elastic cartilage
5 Functions of the Skeletal System
1. Support 2. Protection 3. Movement 4. Storage 5. Blood cell Production
When a matrix surrounds a chondroblast it becomes:
A chondrocyte
Perichondrium
A double layered connective tissue sheath covering most cartilage
Chondrocyte
A rounded cell that occupies a space called a lacuna within the matrix.
Lacuna
A rounded cell that occupies a space within the matrix
Appositional growth
Add new cartilage to the outside edge of the existing cartilage, chondroblasts lay down new matrix and add new chondrocytes to the outside of the tissue
Interstitial growth
Chondrocytes within the tissue divide and add more matrix between the existing cells
What provides strength in the matrix:
Collagen
What type of tissue is the perichondrium
Dense irregular connective tissue (containing fibroblasts)
Inner layer of pericardium (called the visceral layer) contains:
Fewer fibers and chondroblasts
Cartilage intimately associated with bone:
Hyaline cartilage
Proteoglycans
Make cartilage resilient by trapping water (in the matrix)
Proteoglycans
Makes cartilage resilient by trapping water
Diffuses through the cartilage matrix to reach chondrocytes:
Nutrients
Chondroblasts
cartilage-forming cells
articular cartilage
covers the surfaces of bones where they come together to form joints (hyaline cartilage)
