60 



GENERAL ANATOMY OF THE TISSUES. 



Fig. 20. 



Fig. 21. 



I. With a more homogeneous, chondrin-yielding substance: 

 true cartilage, hyaline cartilage : it is found in the larger 

 cartilages of the respiratory organs, those of the articulations, 



of the ribs, and of 

 the nose ; also in 

 all symphyses and 

 synchondroses im- 

 mediately in con- 

 tact with the bones; 

 in the talus ossis 

 cuboidei, and in the 

 so-called ossifying 

 cartilages of the foetus. 



2. With a fibrous inter- 

 stitial substance, yielding no 

 chondrin, or but very little : 

 reticulated cartilage, vellow 

 cartilage, fibro-cartilage in 

 part ; epiglottis, cartilayines 

 Santoriniame, Wrisberyianoe, 

 cartilage of the ear and of 

 the Eustachian tube ; liga- 

 menia intervertebraliam part . 



[In the Tnvertebrata many tissues of a similar consistence to 

 cartilage are found, but true cartilage lias hitherto been dis- 

 covered only in the Cuttle-fishes.] 



Literature. — Meckauer, f De penitiori cartilaginum structura 

 Diss./ Vratisl., 1836 ; J. Mtiller, in ' PoggendorPs Annalen/ 

 1836, p. 293; Rathke, in Froriep's 'Notizen/ 1847, p. 306; 

 A. Bergmann, ' De cartilaginibus Disq. micr./ Mitaviae, 

 1850. 



§ 23. 



Elastic Tissue. — The elements of elastic tissue are cylindrical 

 or band-like fibres, with dark contours, which vary in their 



Fig. 20. Cartilage cells from the white layer of the cricoid cartilage, x 350. 

 From man. 



Fig. 21. Portion of a human cjiiglottis, x 350. 



