228 



NORMAL HISTOLOGY. 



verge at the apex of the lobule. More complex tubules sometimes arise by 

 fusion of several arched ones. Then they pass, after occasional union with 

 another canal, into the straight tubules (tubidirecti) that enter the mediastinum 

 and join to form a close network, therete testis. The latter extends almost 

 the entire length of the mediastinum and consists of a system of irregular 



Epididymis 



Convolutions of duct of epididymis in 

 globus major 



Coni vasculosi 

 (convolutions of 

 efferent ducts) 



Efferent ducts 



Digital fossa 

 Serous surface of testis 



Sections of duct 



Testis 



Interlobular septum 

 Tunica albuginea 



Lobules of gland-tissue 



Convolutions of duct 

 of epididymis in 

 globus minor 



FIG. 278. Longitudinal section of testicle of child, showing arrangement of framework and gland-tissue 

 and of canals connecting testis with epididymis. X 10. 



intercommunicating channels lined with cuboidal epithelium. With these 

 passages the canals of the testicle proper end, the immediate continuation 

 of the spermatic path being from 15-20 tubules, the ductuli efferentes, that 

 pierce the tunica albuginea along the posterior border of the testis near the 

 upper pole and, forming the progressively tortuous coni vasculosi, connect 

 the sexual gland with the beginning of the spermatic duct, the highly con- 

 voluted ductus epididymidis. 



