1. assistant lecturer Farah E. Ismaeel
BIOLOGY LAB
CARTILAGE
assistant lecturer Farah E. Ismaeel
1/2/2018

2. Characteristics of Cartilage
Cartilage is a special form of connective tissue that also develops from the mesenchyme
consists of cells, connective tissue fibers, and ground substance
Nonvascular, gets nutrients via diffusion through ground substance
assistant lecturer Farah E. Ismaeel
1/2/2018

3. Functions of cartilage
Cartilage exhibits tensile strength,
Cartilage provides firm structural support for soft tissues
Cartilage allows flexibility without distortion
Cartilage is resilient to compression.
assistant lecturer Farah E. Ismaeel
1/2/2018

4. assistant lecturer Farah E. Ismaeel
Classification of cartilge is based on the amount and types of connective tissue fibers that are present in the extracellular matrix.
assistant lecturer Farah E. Ismaeel
1/2/2018

5. assistant lecturer Farah E. Ismaeel
Three types of cartilage
Hyaline cartilage.
2.elastic cartilage.
3.fibrocartilage.
assistant lecturer Farah E. Ismaeel
1/2/2018

6. assistant lecturer Farah E. Ismaeel
Hyaline cartilage
Perichondrium (dense CT)
Chondroblast
Chondrocytes
Lacunae
Hyaline cartilage
Nuclei of chondrocytes
assistant lecturer Farah E. Ismaeel
1/2/2018

7. assistant lecturer Farah E. Ismaeel
Hyaline cartilage
Hyaline cartilage :trachea. Stain: hematoxylin and eosin
assistant lecturer Farah E. Ismaeel
1/2/2018

8. Functions and distributions of hyaline cartilage
In embryos, hyaline cartilage serves as a skeletal model for most bones.
In adults, most of the hyaline cartilage model has been replaced with bone, except on the articular surfaces of bones, ends of ribs (costal cartilage), nose, larynx, trachea, and in bronchi. Here, the hyaline cartilage persists throughout life and does not calcify.
assistant lecturer Farah E. Ismaeel
1/2/2018

9. assistant lecturer Farah E. Ismaeel
1/2/2018

10. assistant lecturer Farah E. Ismaeel
Elastic cartilage
assistant lecturer Farah E. Ismaeel
1/2/2018

11. assistant lecturer Farah E. Ismaeel
Elastic cartilage
Elastic cartilage: epiglottis. Stain: silver. Low and High magnification.
assistant lecturer Farah E. Ismaeel
1/2/2018

12. Functions and distribution of elastic cartilage
elastic cartilage owing to the numerous branching elastic fibers in its matrix, confers structural support
elastic cartilage increased flexibility.
Found in external ear, auditory tube, epiglottis, and larynx.
assistant lecturer Farah E. Ismaeel
1/2/2018

13. assistant lecturer Farah E. Ismaeel
Fibrocartilage
Row of chondrocytes
Fibrous cartilage: intervertebral disk. Stain: hematoxylin and eosin. 4X ,10X and 40X
assistant lecturer Farah E. Ismaeel
1/2/2018

14. Functions and distribution of fibrocartilage
The main function of fibrocartilage is to provide tensile strength, bear weight, and resist stretch or compression.
Fibrocartilage has a limited distribution in the body and is found in the intervertebral disks, symphysis pubis, and certain joints.
assistant lecturer Farah E. Ismaeel
1/2/2018

15. assistant lecturer Farah E. Ismaeel
1/2/2018

16. assistant lecturer Farah E. Ismaeel
THANK YOU
assistant lecturer Farah E. Ismaeel
1/2/2018