EPIDIDYMIS 



383 



coarse granules. They are quite characteristic of this portion of 

 the excretory tubules of the testis. The coni vasculosi form a 

 considerable portion of the globus major of the epididymis. 



EPIDIDYMIS 



The epididymis forms a long coiled tubule whose convolutions, 

 by their regular cylindrical form and their tall ciliated epithelium, 

 are sharply distinguished from those of the ductuli efferentes, 



FIG. 311. SEVERAL COILS OF THE BABBIT'S EPIUIDYMIS IN TRANSECTJON. 

 The lumen of the tubules contains groups of spermatozoa. Hematein and eosin. Photo. 



x 178. 



which have much thinner walls. The lining epithelium of the 

 epididymis is of the tall ciliated columnar type with elongated 

 ovoid nuclei, a finely granular cytoplasm, and a group of cilia 

 which often adhere together to form a peculiar tuft or cluster. 

 At the base of the ciliated cells is an incomplete layer of basal 



