STRATIFIED EPITHELIUM 



3 1 



so that it should more accurately be termed transitional, page 24, or stratified. 

 b. Some portions of the generative apparatus in the male, viz., lining the 

 'vasa efferentia" of the testicle, and their prolongations as far as the lower 

 end of the epididymis, and much of the vas deferens; in the female, c, com- 

 mencing about the middle of the neck of the uterus, and extending throughout 



FIG. 33. Specialized Pigmented Epithelial Cells of Retina. 



the uterus and Fallopian tubes to their fimbriated extremities, and even for 

 a short distance on the peritoneal surface of the latter, d. The ventricles of 

 the brain and the central canal of the spinal cord are clothed with ciliated 

 epithelium in the child, but in the adult this epithelium is limited to the cen- 

 tral canal of the cord. 



FIG. 34 . 



FIG. 35. 



FIG. 34. Spheroidal Ciliated Cells from the Mouth of the Frog. X 300 diameters. 

 (Sharper.) 



FIG. 35. Ciliated Epithelium from the Human Trachea, a, Large, fully formed cell 

 b, shorter cell; c, developing cells with more than one nucleus. (Cadiat.) 



The cilia themselves are fine rounded or flattened homogeneous processes. 

 According to some observers, these processes are connected with longitudinal 

 fibers which pass to the other end of the cell, but which are not connected 

 with the nucleus. 



