Cartilage

1. CARTILAGE
BY SAI KIREETI RAJA
GROUP GM21-10(B)

2. Connective tissue
• Cells
• Cells producing extracellular material
• Other cells (immune cells, fat cells)
• Extracellular material
• Ground substance – matrix of organic material
• Fibres

3. Connective tissues

4. Cartilage
• A semi-rigid tissue
• Variable amounts of collagen and elastic fibres
• Three types
– Hyaline cartilage (consist of collagen fires)
– Elastic cartilage (consist of collagen and lot of elastic fires)
– Fibrocartilage

5. Cartilage
Nerves
Blood vessels
Perichondrium
cells
diffusion

6. Chondroblasts
Lacuna/
space
Chondrocytes

7. Cartilage…
• Grow by
– Interstitial growth (chondrocytes dividing & forming
clusters)
– Appositional growth (chondroblasts differentiating into
chondrocytes)
• Adults have a limited distribution of cartilage
• Newborns have more extensive distribution

8. Hyaline Cartilage
• Most common type
• Found in,
nasal septum, larynx, tracheal rings, costal
cartilages and articular surfaces of sinovial joints
• Newborns have more extensive distribution since
they act as templates for most of the long bones

9. Elastic Cartilage
• Found in,
external ear, external auditory canal, epiglottis and
wall of Eustachian tubes.
• Differ from hyaline cartilage by having numerous
elastic cartilage bundles in the matrix

10. Hyaline cartilage
Elastic cartilage

11. Fibrocartilage
• Found in,
intervetebral discs, some articular cartilages and
pubic symphysis.
• Features appear intermediate between cartilage and
dense fibrous connective tissue
• There are alternating layers of hyaline like cartilage
and thick layers of collagen fibres.

12. Fibrocartilage