>226 



ANATOMY OF THE DOMESTIC FOWL 



the abdominal muscles. The posterior aorta gives off the spermatic 

 arteries and the ovarian artery. In the male the former supply 

 the testes. The ovarian artery of the female gives off a twig to each 

 calyx containing an ovum. Each calys. is voluminously supplied 

 with blood. Next the renal arteries are given off to the kidneys. 



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Fig. 64. — The splanchnic arteries, veins and nerves, i, A portion of the left 

 testes. 2, Adrenal gland. 3, Anterior lobe of kidney. 4, Heart. 5, Liver. 

 6, Second portion of the esophagus. 7, Proventriculus. 8, Gizzard. 9, Spleen. 

 10, Duodenal loop, ri, Pancreas. 12, Blind extremity of caecum. 13, Float- 

 ing portion of small intestine. 14, Rectum. 15, Cloaca. 16, Anus. 17, 

 Celiac axis. 18, Ureter. 19, Vas deferens. 20, Recurrent sinister artery. 21, 

 Anterior recurrent dexter artery. 22, Arteria hepatica dextra. 23, Recurrent 

 esophageal artery. 24, Recurrent intestinalis artery. 25, Ilio-colicus artery. 

 26, Anterior mesenteric artery. 27, Recurrent branches of the same. 28, Ilio- 

 coeliacus artery. 29, Recurrent superior hemorrhoidal artery. 30, Posterior 

 mesenteric artery. 31, Crural arteries. 32, Sacralis media artery. 33, Recur- 

 rent renalis. 34, Middle renal lobe. 35, Posterior renal lobe. 36, Vena mesen- 

 tericus communis. 37, Vena hemorrhoidalis. 38. Vena pancreatico-duodenalis. 

 39, Vena proventriculo-leinealis. 40, Vena portalis dextra. 41, Ischiadic nerve. 

 42, Thoracic sympathetic trunk. 43, Anteror splanchnic plexus. 44, Spinal 

 nerves. 45, Posterior splanchnic nerve plexus. 46, Intestinal nerve trunk. 

 47, Vena renalis magna. 



The celiac axis (Fig. 64, No. 17) originates near the seventh ster- 

 nal vertebra and to the right of the esophagus, breaks through the 

 diaphragm, and, near this point, gives off a recurrent esophageal 

 (Fig. 64, No. 23). The cehac axis gives off three main branches: 

 The anterior or recurrent dexter, the posterior or recurrent sinister, 



