THE ABDOMEN 



857 



the glans penis. It is about 6 inches in length, and its cahbre is 

 ■unequal throughout. It presents two dilatations, one situated in 

 the bulb (which represents about the first i-| inches of the corpus 

 spongiosum), and the other in the glans penis, the latter being 



Mercier's Bar 



Bell's Muscle 



Internal Trigone 



Left Ureteric Opening 



Crest 



Opening of Utricle 

 Prostate Gland in Section (showing 

 Prostatic Portion of Urethra) 



Membranous Portion of Urethra 

 Cowper's Gland of Left Side 



Left Half of Bulb of Urethra 

 Left Crus Penis 



Openings of Ducts of 

 Cowper's Glands 



Spongy Portion of L^rethra 



Left Corpus Cavernosum 



.Littr^'s Glands and Lacunse 

 of Morgagni 



- Fossa Navicularis 



- Left Half of Glans Penis 



Meatus Urinarius 



Fig. 369. — The Interior of the Male Urethra. 



called the fossa navicularis. The bulbous enlargement is about 

 t\ inches in length, whilst the fossa navicularis is about i inch 

 long. The diameter of that part of the spongy urethra which 

 intervenes between the bulbous enlargement and the fossa navi- 



