CARTILAGE. 7:\ 



networks (Fig. 37). By means of specific staining reactions the 

 elastic fibres can plainly be demonstrated. They give to the 

 fresh cartilage a less transparent appearance, and cause it to 

 have a slightly yellow color, by which it may be distinguished 

 by the naked eye from hyaline cartilage. The elastic fibres 

 pass over into the perichondrium at the border of the cartilage. 

 The development of elastic fibres in cartilage has been 

 spoken of in describing their origin in connective tissue. 



FIG. 37. 





Elastic fibre* 



Elastic cartilage from the human ear. x 570. 



Elastic cartilage is found in the outer ear, in the Eustachian 

 tube, and the sesaraoid cartilages. It is found also in portions 

 of the laryngeal cartilages ; the epiglottis, processus vocales of 

 the arytsenoid cartilages, the cuneiform and corniculate carti- 

 lages. 



(e) White Fibrous Cartilage. Here we find in a small quan- 

 tity of ground substance bundles of collagen-producing fibrils, 

 which are arranged in parallel and slightly wavy lines. The 

 homogeneous ground substance is very small in quantity and 

 usually reduced to only that which forms the capsules around 

 the cells. The cells themselves are not numerous, and have a 



