282 



THE ESSENTIALS OF HISTOLOGY. 



FIG. 314. SECTION OF ONE OF THE HUMAN SEMICIRCULAR CANALS. (Rudin<>-er.) 



(Magnified.) 



1, osseous wall ; 2, fibrous bands with included blood-vessels, united at 3 with the peri- 

 osteum ; 4, membranous canal with its three layers; 5, short fibrous bands (with 

 intervening spaces) uniting the membranous canal firmly to the periosteum ; 6, union 

 of its outermost layer with the periosteum. 



FIG. 315. SECTION OF MEMBRANOUS SEMICIRCULAR CANAL. (Riidinger.) 

 (Much magnified.) 



1, outer fibrous layer ; 2, tunica propria ; 3, 6, papilliform projections with epithelial 

 covering ; 5, fixed side of the canal, with very thin tunica propria without papillse ; 

 V, fibrous bands passing to periosteum. 



