. The diseases of the genital organs of domestic animals. Veterinary medicine. 152 Diseases of the Genital Orgayis I always feel that fraud has probably been committed, though I believe that exceptions exist. In the most typical individuals, no distinctively genital organs exist, but traces of both Wolffian and Mueller's ducts are present and may be clearly traced. No ovaries or testes are present, but very tiny undifferentiated sex glands may be recognizable. Every gradation of development is encountered, from ab- solute neuter to complete female, but the direction of devel- opment in cattle,
. The diseases of the genital organs of domestic animals. Veterinary medicine. 152 Diseases of the Genital Orgayis I always feel that fraud has probably been committed, though I believe that exceptions exist. In the most typical individuals, no distinctively genital organs exist, but traces of both Wolffian and Mueller's ducts are present and may be clearly traced. No ovaries or testes are present, but very tiny undifferentiated sex glands may be recognizable. Every gradation of development is encountered, from ab- solute neuter to complete female, but the direction of devel- opment in cattle, so far as I have observed, is always toward the female—never toward the male or toward hermaphrod- itism. Hermaphroditism, so far as I have noticed, is rarer in cattle than in any other species of domestic animal, but. Fig. 47—Arrested Development of the Genital Tract. Bovine. MU, Meatus urinarius ; V, vulva ; //, hymen ; Ta, vagina ; U, cordiform Muellerian ducts representing the uterus ; UC, uterine cornu, excavated and filled with fluid (menstrual debris) ; CL, corpus luteum ; C, ovary. cattle furnish by far the greatest number of asexual indi- viduals. The development of the genital organs in the embryo be- gins at the anterior, or ovarian end and progresses toward the vulva. In the typical asexual individual, the genital glands are represented by indifferent nodes, yellow in color, about the size of an ordinary grain of wheat. Both the Muellerian and Wolffian ducts are present and have attained considerable size. They do not become tubular, but persist as solid, fibrous cords. All four structures lie on a common plane, the Wolffian lateral to the Muellerian ducts and in close contact with them. The ducts of Mueller do not fuse. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Williams, Walter Long,
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectveterin, bookyear1921
