526 



LABORATORY MANUAL OF HUMAN ANATOMY 



(c) Middle lobe (lobus medius). 



The latter lobe is not always present. To bring it into view, if 

 present, separate the seminal vesicles and the vasa deferentia 



FIG. 280. 



Schema showing the modifications in the form of the bladder during repletion. (From Poirier et 

 Charpy, Traite" d Anat. hum., Paris, 1901, t. v. p. 79, Fig. 63.) 



from the base of the bladder and throw them backward. Many 

 authorities maintain that this lobe is to be found only in patho- 

 logical cases. 



M. obturator 

 intemus 



Tela subserosa^J 



Cross-section of 

 the arcus ten- 

 dineus fasciae x 

 pelvis 



Fascia 

 endopelvina - 



M. obturator, 

 internus 



Fascia obturatoria 



Fascia diaphragma- ... 

 tis pelvis superior 



M. levator ani - 

 Fascia prostata 



M. ischiocavernosus " / 



M. transversus perinei superficialis 



FIG. 281. 



Ampulla ductus deferentis 



Spina iliaca poste- 

 rior inferior 



Plexus (venoms) 

 pudendalis 



Incisura ischiadica- 

 major 



---Fpina ischiadica 



- Fascia obturatoria 



..-Fascia diaphragmatis 

 pelvis inferior 



...Prostata (facies 

 posterior) 



A. pudenda interna 



"" Tuber ischiadicum 



Fascia diaphragmatis urogenitalis superior 

 M. bulbocavernosus 



The position of the seminal vesicles and ampullae of the ductus deferentes in relation to the fundus 

 of the bladder and to the prostate. The M. levator ani has been cut across in a frontal plane. The 

 fascia prostatae has been removed on the right side ; on the left side its upper part, passing on to the 

 seminal vesicle, has been loosened and turned down. Seen from behind. (After Toldt, Anat. Atlas, 

 Wien, 1900, 2 Aufl., p. 516, Fig. 895.) 



Surfaces. 



(a) Anterior surface (facies anterior}. 

 (&) Posterior surface (facies posterior). 



