. The anatomy of the domestic fowl . Domestic animals; Veterinary medicine; Poultry. 232 ANATOMY OF THE DOMESTIC FOWL the lateral rim of the latter muscle it gives oflF the arteria hemorrhoid- alis intima. This artery passes to the bursa of Fabricius and to the end of the cloaca. It enters into the ischio-coccygeus muscle, and divides into the arteria pudenda externa, and in ducks, the arteria profunda penis. These branches supply the vas deferens, the ureter, the cloaca, the penile structure, and the muscles of these Fig. 70.—Blood-vessels of a Cornish cock i, The left pulmonary arter
. The anatomy of the domestic fowl . Domestic animals; Veterinary medicine; Poultry. 232 ANATOMY OF THE DOMESTIC FOWL the lateral rim of the latter muscle it gives oflF the arteria hemorrhoid- alis intima. This artery passes to the bursa of Fabricius and to the end of the cloaca. It enters into the ischio-coccygeus muscle, and divides into the arteria pudenda externa, and in ducks, the arteria profunda penis. These branches supply the vas deferens, the ureter, the cloaca, the penile structure, and the muscles of these Fig. 70.—Blood-vessels of a Cornish cock i, The left pulmonary artery. 2, Right pulmonary artery. 3, Left brachio-cephalic artery. 4, Left subclavian artery. 5, Left carotid artery. 6, Right brachio-cephalic artery. 7, Posterior aorta. 8, Posterior vena cava. 9, Left pulmonary vein. 10, Right ptilmonary vein. II, Celiac axis. 12, Anterior mesenteric artery. 13, Ischiadic artery. 14, Crop. 15, Superior artery of the crop and vein of same name. 16, Testicular or ovarian artery. 17, External iliac artery. 18, Intercostal nerve, ig, Median sacral artery. 20, Arteria ^judenda communis. 21, Anus. 22, Vena hypo- gastrica. 23, Right vena hepatica magna. 24, Left vena hepatica magna. 25, Vena iliaca interna. 26, Vena iliaca communis. 27, Vena iliaca externa. 28, Vena coccygo-mesenterica. 29, Vena umbilicalis. 30, Vena supra-renalis. 31, Origin of the pars renalis. 32, Lumbar veins. 33, Vena epigastrica. 34, Lumbales (arteries). 35, Anterior division of the lumbo-sacral plexus. 36, Posterior division of the lumbo-sacral plexus. 38, Right anterior vena cava. 37, Left anterior vena cava. The Sacralis Media.—The median coccygeal artery (Fig. 70, No. 19) forms the single extension of the sacralis media. It gives off lateral branches between the caudal vertebrae which supply the dorsal muscles of that region and the skin. The third pair are the largest. These are the arterim coccygecB laterales, and are located on the dorsal side of the tail, they supply
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