572 



BLOOD-VASCULAR SYSTEM OF THE HORSE 



Internal iliac lymph glands 



Circumflex iliac vessels 



External iliac lymph glands 



Inguinal ligaments 



Posterior branch of circum- 

 flex iliac artery 

 External cutaneous nerve 



External spermatic nerve 

 Tensor fascia; latcc 



Femoral nerve and ante- 

 rior femoral vessels 

 Femoral artery 

 Precrural lymph glands 



Deep inguinal lymph 



glands 



Fascia lata 



Internal patellar ligament 

 Middle patellar ligament 



Saphenous nerves 

 Saphenous vessels 



Fig. 451. — Dissection of Pelvis, Thigh, asd Upper Part of Leg op Horse, Lvtkrnal View. 



L, lAinibar ve.s.sels; I.e., jjosterior vena cava; yl, aorta (termination); C, sympathetic trunk; /, internal iliac 

 artery: 2, lateral sacral artery; 3, middle coccygeal artery; 4, lateral coccygeal artery; 5, umbilical artery (cut 

 off); 6, internal pudic artery; 6', vesico-prostatio artery; 7, obturator artery; 5, a. profunda penis (from left 

 obturator); 9, posterior gluteal (or ischiatic) vessels; 10, external iliac artery; 11, 11', deep femoral artery; 12, 

 prepubic artery; /3, branch of deep femoral artery; ^4. great sciatic nerve; /5, posterior gluteal nerve; /ff (above), 

 internal pudic nerve; 16 (below near pelvic outlet), suburethral venous plexus; 17, sacro-coccygeus inferior; 18, 

 coccygeus; 7S, recto-coccygeus; j20, retractor ani; ;?/,.?/', two heads of obturator internus; ;?.?, symphysis pelvis; 

 ZS, prepubic tendon; 24 suspen.sory ligament of penis; 25, retractor penis muscle; 26, bulbo-cavernosus muscle; 

 27, urethra (cro.s.s-section); 2S, crus penis (crosis-section) ; 29, suspensory ligaments of anus (= upper part of 

 retractor penis muscle) ; 30, anal lymph glands; 31 , tibial nerve. (After Schmaltz, .\tlas d. .\nat. d. Pferdes.) 



