VISCERAL ANATOMY. I55 



Fig. 25.— generative organs of the mare, isolated and partly opened. 



I, I, Ovaries; 2, 2, Fallopian tubes; 3, Pavilion of the tube, external face; 4, Ibid., inner 

 face, showing the opening in the middle; 5, Ligament of the ovary; 6, Intact horn of 

 the uterus; 7, A horn thrown open; 8, Body of the uterus, upper face; 9, Broad liga- 

 ment; ID, Cervix, with its mucous folds; 11, Cul-de-sac of the vagina; 12, Interior of 

 the vagina, with its folds of mucous membrane; 13, Urinary meatus, and its valve, 14; 

 15, Mucous fold, a vestige of the hymen; 16, Interior of the vulva; 17, Clitoris; 18, 18, 

 Labia of the vulva; 19, Inferior commissure of the vulva. 



Blood Supply. 

 Utero-ovarian. 

 Ner-oe. 

 Mesenteric plexus. 



THE MAMMARY GLANDS. 



The mammae are two glandular bodies situated in the posterior 

 and inferior abdominal region, in the position of the scrotum in 

 the male. They are hemispherical in shape, terminating below 

 in a small prominence, the nipple or teat. 



Structure. 



Skin, of abdominal region, thin and soft. 



Fibrous coat, of elastic fibrous tissue, which sends prolon- 

 gations into its interior. 



Pare7ichyma of vesicles or acini, opening into lactiferous ducts. 

 These unite and form several canals. These form two, three or 

 four sinuses opening by several canals on the nipple. The acini 

 are lined with polyhedral epithelium which become rounded and 

 fatty in lactation. 



Blood Supply. 



External pudic. 



Nerves. 



First lumbar. 



ORGANS OF SPECIAL SENSE. 

 Smell. — Located in the nasal cavities. 



THE NASAL CAVITIES. 



Bony walls. 

 Floor. 



Two superior maxillary, two inter-maxillary and two palate 

 bones. 



