76 NORMAL HISTOLOGY AND ORGANOGRAPHY. 



Cartilage cell. 



Elastic fibers. 



surface, while deeper in the matrix the long axis is 

 often at right angles to the surface. Each lacuna 

 contains one or more cartilage cells. The cartilage 



surrounding lacunae 

 usually stains differ- 

 ently from the bal- 

 ance of the matrix. 



This cartilage oc- 

 curs as articular carti- 

 lage of joints, at the 

 end of ribs, and in the 

 nose, the larynx, the 



F ig 44 Section of elastic cartilage trachea, and bronchi. 



from epiglottis. 2i Elastic Carti- 



lage. Elastic cartilage differs from the hyaline vari- 

 ety in having typical interlacing, branched elastic 

 fibers that form a dense network. This cartilage is 

 found wherever elas- 

 ticity is required, as in 

 the external ear, the 

 Eustachian tube, epi- 

 glottis, part of ary- 

 tenoid cartilages, and 

 cartilages of Wrisberg 

 and Santorini. 

 3. White Fibrous 



f. ... -r ., . Fig. 4S Section of white fibrocarti- 



Cartllage. In thlSVa- i age from symphysis pubis. 



rietythe white fibers 



predominate. As a rule these fibers run parallel in 

 bundles and do not branch. A granular matrix 

 intervenes between the fibers. Fibrous cartilage 

 is found in the intervertebral disc, in the sym- 



