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

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

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

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

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

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

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

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

assistant lecturer Farah E. Ismaeel 1/2/2018

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

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

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

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

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

assistant lecturer Farah E. Ismaeel 1/2/2018

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