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LABORATORY MANUAL OF HUMAN ANATOMY 



urogenital diaphragm (diaphragma urogenitale) (O. T. trian- 

 gular ligament). This is also known as the " middle perineal 

 aponeurosis." (Vide Spalteholz, Figs. 657, 658, 673.) 



FIG. 228. 



ntoic sheath 



Fascia obturatoria 



Fasc. diaph. pelvis sup. 

 Fasc. endopelvina 

 Fasc. diaph. pelvis inf. 

 Fasc. diaph. urogen. sup. 

 Fasc. diaph. urogen. inf. 



Fascia superficialis perinei 



The perineal aponeuroses; frontal section. (From Poirier et Charpy, Traite d'Anat. hum., Paris, 1901, 



t. v. p. 217, Fig. 146.) 



Note carefully the attachments of the following layers of 

 fascia and their relations to neighboring parts. 



(a) Inferior fascia of urogenital diaphragm (fascia diaphragmatis uro- 



genitalis inferior] (0. T. superficial layer of triangular ligament). 



(b) Superior fascia of urogenital diaphragm (fascia diaphragmatis uro- 



genitalis superior) (0. T. deep layer of triangular liga- 

 ment). 



What is the relation posteriorly of these two layers of 

 fascia to the fascia of Colles? 



The superior fascia is composed of three lamellae. In 

 order from the pubic arch backward note 



(ba) Arcuate ligament of pubis (Lig. arcuatum pubis). Note the 



relation of the dorsal vein of the penis (V. dorsalis penis) 

 and the dorsal nerve of the penis (N. dorsalis penis) to this 

 ligament. (Vide Spalteholz, Fig. 673.) 



(bb) Transverse ligament of pelvis (Lig. transversum pelvis) (0. 



T. median puboprostatic ligament of Krause). It is a 

 fibrous band extending between the ischiopubic rami imme- 

 diately behind the dorsal vein of the penis and in front of 

 the urethra. Note the following aponeurotic divisions. 



(1) The anterior division passes anteriorly beneath the 



dorsal vein and is attached to the fibrous tunic of 

 the corpora cavernosa, forming a union between 

 these two bodies. It is called the " supra-urethral 

 part of the middle aponeurosis." 



(2) The posterior division passes in front of the urethra 



and the prostate, fusing with the proper capsule 

 of the latter. It is known as the " preprostatic 

 layer." 



