298 



OPEBATIONS ON MUSCLES AND THEIR ANNEXES. 



Fig. 314.— Anatomy of the Perineal, Anal and Caudal Regions. 

 1 1.— The skin. 2.— Portion of the aponeurotic sheath of the coo(>ygeal muscles. 

 3 3.— Inferior sacro coccygeal muscles. 4 4.— Lateral sacro coccygeal muscles. 5 5.— Is- 

 chio coccygeal muscles. 6.— Suspensory ligament of the anus. 7 7.— Lateral caudal 

 arteries. 8.— Deep caudal vein, satellite ot the median artery. 9.— ^Median caudal 

 artery. 10 10.— Inferior caudal nerves. 11.— Lymphatic glands. 12 12.— Superficial 

 caudal veins. 12'— One of the superficial caudal veins. 13.— Portion of the perineal 

 aponeurosis. 14 14.— Semi-membranosus muscle. 15.— Sphincter ani. 16 16.— Ischio 

 cavernous muscle. 17 17.— Bulbo cavernous muscle. 18 18.— Suspensoi-y ligaments ot 

 thei)fniB. 19 19.— Bulbous or internal pudic arteries. 20.— Im-ision of the urethral 

 canal lor urethrotomy. 21.— Anus. 



