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Skeletal tissues
1. Classification and functions
2. Chondroid tissue cells, inter-cellular
substance
3. Histogenesis of cartilages
4. Cartilages:
a) hyaline;
b) elastic;
c) fibrocartilage
5. Bony tissue cells, intercellular substance
6. Fibrous bones
7. Lamellar bones
8. Long bones
9. Osteogenesis
Skeletal tissues
Chondroid tissue
– Hyaline
– Elastic
– Fibrocartilage
Bony tissue
Fibrous bone
Lamellar bone: a) cancellous
b) compact
Functions
•
•
•
•
•
1. Supportive
2. Mechanical
3. Protective
4. Ca and P deposition
5. Water-mineral metabolism
Chondroid tissue
Cells + intercellular substance
(chondromucoid, chondrine
fibers)
1. Has no vessels
2. Intercellular components are
predominant
3. Chondromucoid
70-80 % H2O
10-15 % org.
4-7 % mineral
4. Chondrine fibers
– Collagen II
– Elastic
Chondroid tissue
differon
I Stem cell
II Hemistem cells
III Chondroblasts
IV Chondrocytes
Chondroclasts
Differon
stem cell
hemistem cell
chondroblasts
chondrocytes
Cartilage
Hyaline cartilage
Elastic cartilage
Resorcin stain
Fibrocartilage
Bony tissue
cells + matrix
(osteoid+ossein fibers+salts)
1.
2.
3.
4.
5.
Supports fleshy structures
Protects organs
Harbors the bone marrow
Storage of Ca and P
Multiply the forces of skeletal
muscle contraction
Osteocyte
Osteoclast
Bones
1. Fibrous
2. Lamellar (compact and
cancellous)
Diaphysis
Haversian system
Histogenesis
1. Intramembranous
2. Endochondral
1. Osteogenic islet
2. Osteoid stage
3. Salts impregnation
4. Replacement by
lamellar bone
Endochondral
histogenesis
Endochondral
ossification
1. Cartilage model
2. Perichondral ossification
3. Endochondral
ossification
4. Epiphyseal ossification
Epiphyseal plate
Regeneration
Joint
Joint
Regulation