528 



LABORATORY MANUAL OF HUMAN ANATOMY 



vessels and nerves of the lateral pelvic wall. Note the spindle- 

 shaped dilatation or ampulla (ampulla ductus defer entis] behind 

 the bladder. Observe the diverticula (diverticula ampullae}. 

 With what structure does the ampulla communicate! What duct 

 is formed by this communication? Open the ampulla and dissect 

 its wall. Study 



(a) Adventitious coat (tunica adventitia). 



(b) Muscular coat (tunica muscularis}. 



(ba) External, middle, internal layer (stratum externum, medium, 

 internum). 



(c) Mucous coat (tunica mucosa). 



ARTERIES OF PELVIS. 



Carefully clean each vessel and its branches. Study its 

 course and relations. Before beginning the dissection, remove 



FIG. 283. 



A. acetabuli ^^JL 



Memb. obt. ext... 



Ram. intrapelv. //' 



(Waldeyer) 

 Posterior branch - 



A. obturatoria 



Ram. prepubicus 

 Anterior branch 



The obturator artery. (From Poirier et Charpy, Traite d'Anat. hum., Paris, 1901, 2 ed, t. ii. p. 802, 



Fig. 440.) 



the cotton from the rectum, and if the bladder is still distended 

 allow the air to escape. Preserve the sympathetic twigs follow- 

 ing each artery. 



