histo - ct - cartilage

1. ‫الرحيم‬ ‫الرحمن‬ ‫ال‬ ‫بسم‬‫الرحيم‬ ‫الرحمن‬ ‫ال‬ ‫بسم‬

2. Modified types of connective tissue
Cartilage bone blood

4. 1

7. This lecture will include:
Structure and function of cartilage
-Types of cartilage;
1-Hyaline cartilage.
2-Elastic cartilage
3-White fibrocartilage

8. COMPONENTS OF CARTILAGE
1- Intercellular ground substance (extra cellular
matrix)
2- Collagenous and elastic fibers embedded in the
matrix.
3- Cartilage cells namely chondroblasts and
chondrocytes.

9. Perichondrium

11. The perichondrium:
Cartilage is usually covered by perichondrium
The perichondrium consists of two layers:
1- an outer fibrous layer rich in collagen.
2- an inner vascular and cellular layer which is also
called chondrogenic layer. The cells in this layer are
chondroblasts which are capable of forming new
cartilage.

12. I- The intercellular ground substance (matrix)
It is responsible for the firmness of the cartilage
-It consists of collagen embedded in a firm gel of
proteoglycans and structural glycoproteins.
-chondroitin sulfate
-chondromucoproteins

13. II-Cells of cartilage:
1- Chondroblast
2-Chondrocytes

16. III- The fibers
 Both collagen and elastic fibers are found in the
matrix of cartilage.

17. 1- Hyaline cartilage

18. 1-Hyaline cartilage:

21. Sites of hyaline cartilage
Constituting most of the cartilagenous skeleton in
the embryo.
Forming the epiphyseal plates in growing age.
The costal cartilages.
The nose, larynx, trachea and bronchi in the
respiratory system.
Covers the articular surfaces of nearly all synovial
and cartilagenous joints.

23. 2-Elastic cartilage

27. Sites:
1- The auricle of the ear (ear pinna).
2- External auditory meatus.
3- Cuneiform and corniculate cartilages in the
larynx.
4- Epiglottis.


28. White fibro cartilage

31. Sites:
Intervertebral disc
Tempromandibular joint