STEUCTURE OF COEPORA CAVERNOSA. 



433 



and plain muscnlar tissue, and named tralcculcc, pass inwards, and run 

 through and across the cavity in all directions, thus subdividing it into 



Fig. 313.— Portion op the Fig. 313. 



Erectile Tissue oi" the 

 Corpus Gaveknosum mag- 

 nil'ied, showing the areo- 

 LAR Structure and the 

 Vascular Distribution 

 (from J. MuUer). 



a, a small artery supported 

 by the larger trabecula;, and 

 liranching out on all sides ; c, 

 the tendril-like arterial tufts 

 or helicine arteries of Muller ; 

 d, the areolar structure formed 

 by the finer trabcculee. 



a multitudeof interstices 

 occupied by tortuous 

 veins, and giving the 

 entire structure a spongy 

 character. 



The trabeculaj, 

 whether lamelliform or 

 cord-like, are larger and 

 stronger near the cir- 

 cumference than along the centre of each cavernous body, and they also 

 become gradually thicker towards the crura. The venous interspaces, 

 conversely, are larger in the middle than near the surface ; their long 



Fig. 314. 



-Erectile Tissue from the peripheral part of the Corpus Cavernosum: 

 Penis, magnified with a low power (from Fx-ey after Langer). 



1, a and h, superficial and deeper cortical network of veins ; 2, a, a, jDassage of arterial 

 ramuscules into the veins of the deeper cortical network. 



diameter is, in the latter situation, placed transversely to that of the 

 penis : and they become larger towards the forepart of the penis. They 

 are lined by a layer of flattened epithelioid cells similar to that lining 

 other veins. The trabecula3 contain the ordinary white fibrous tissue 

 and fine elastic fibres, together with a considerable quantity of pale 



VOL. II. F 1' 



