. Diseases of cattle, sheep, goats and swine. Veterinary medicine. 400 DISEASES OF BLOOD-VESSELS. to recall the anatomical formation of the umbilical region in the new- born animal. At birth the mnbilical cord is represented by a cylindrical mass, surrounded by the terminal portion of the amnion. It enters the abdomen through a circular perforation in the abdominal wall known as the umbilical ring. This ring may be divided into two parts, one deeply seated, the fibro-aponeurotic ring, consisting of an aperture in. Fig. 183.—Position of tlie abdominal viscera in a new-born annual : Hn, rumen; E
. Diseases of cattle, sheep, goats and swine. Veterinary medicine. 400 DISEASES OF BLOOD-VESSELS. to recall the anatomical formation of the umbilical region in the new- born animal. At birth the mnbilical cord is represented by a cylindrical mass, surrounded by the terminal portion of the amnion. It enters the abdomen through a circular perforation in the abdominal wall known as the umbilical ring. This ring may be divided into two parts, one deeply seated, the fibro-aponeurotic ring, consisting of an aperture in. Fig. 183.—Position of tlie abdominal viscera in a new-born annual : Hn, rumen; E, epiploon; E^, left kidney; Ig, small intestine; C, abomasum ; U, m^eter; O, uraclms ; R, rectmn. Umbilical cord: Vo, Umbilical vein; A<x, allantoid arteries; V«, allantoid veins ; 0, the urachus. the white line; the other the superficial or cutaneous ring, formed by the skin, which is wrinkled all round it, and constitutes a kind of sleeve about an inch in length. This cutaneous sleeve is continuous with the amniotic tissues. The entire umbilical cord is therefore enveloped in an amniotic-cutaneous sheath. It is composed of four principal structures—the umbilical arteries, the umbilical vein, the urachus, and the interstitial mucous tissue. The umbilical arteries and vein consist of two parts—the extra-foetal part, which co-operates in forming the cord, and the intra-foetal 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 Moussu, Gustave, 1864-; Dollar, John A. W. , joint author. New York, W. R. Jenkins
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