. The anatomy of the domestic animals. Veterinary anatomy. 458 DIGESTIVE SYSTEM OF THE OX ventral and lateral margin of the large, oval rumino-reticular orifice ((Ostium rumino-reticulare). The mechal margin of the fold, if continued, woukl end about at the cardia, but there is in this region no demarcation between rumen and reticu- lum; hence it is termed the atrium ventriculi. The lateral border of the rumino-retieular fold ends above the level of and beliind the plane of the cardia, the medial one just beliind the a'sophageal groove and about four to five inches lower down. Undoubtedly food
. The anatomy of the domestic animals. Veterinary anatomy. 458 DIGESTIVE SYSTEM OF THE OX ventral and lateral margin of the large, oval rumino-reticular orifice ((Ostium rumino-reticulare). The mechal margin of the fold, if continued, woukl end about at the cardia, but there is in this region no demarcation between rumen and reticu- lum; hence it is termed the atrium ventriculi. The lateral border of the rumino-retieular fold ends above the level of and beliind the plane of the cardia, the medial one just beliind the a'sophageal groove and about four to five inches lower down. Undoubtedly food or water swallowed wdth even a small degree of force passes first into the rumen. Foreign bodies (wliich are commonly swallowed by cattle) are, however, found in the reticulum. Th(> cardia is opposite the seventh intercostal space or eighth rib, a little to the left of the m(>dian plane, and about a handbreadth (ca. 1()-12 cm.) ventral to the vertebral column; it is not funnel-shaped. The mucous membrane of the rumen is brown in color, except on the margins. Fig. 390.—Reticulum of Ox, from Photograph. Tho specimen was cut along the greater curvature and laid open by reflecting the anterior wall. C is the cardia. The arrow points to the reticulo-omasal orifice. The spiral twist of the oesophageal groove waa of necessity partlj- undone by reflecLiiig the wall; its lips are drawn apart, showing some of the pecuhar birdelaw-like papiUse in the ventral part. of the pillars, where it is pale. It is for the most part thickly studded with large papillae, many of which are nearly half an inch (ca. 1 cm.) long. The edges of the chief pillars and a large part of the wall of the middle of the dorsal sac are, however, not papillated. The papillary arrangement is most developed in the blind sacs. The jiapillce vary much in size and form; the largest are foliate, many are narrow or filiform, and others are conical or club-shaped. The mucous membrane on the medial wall of the atrium i
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectveterinaryanatomy
