. The anatomy of the domestic animals . Veterinary anatomy. 424 DIGESTIVE SYSTEM OF THE HORSE to the first part of the colon In- the cseco-colic fold. The apex is free, and conse- quently may vary in position. The cagcum has four longitudinal bands (Taeniae cseci), situated on the dorsal, ventral, right, and left surfaces; these cause four rows of sacculations (Haustra). The ventral band is almost entirely exposed or free (Taenia libera); it begins on the highest part of the base, extends along the medial side of the greater curvature, and joins the medial band near the apex. It is concealed o
. The anatomy of the domestic animals . Veterinary anatomy. 424 DIGESTIVE SYSTEM OF THE HORSE to the first part of the colon In- the cseco-colic fold. The apex is free, and conse- quently may vary in position. The cagcum has four longitudinal bands (Taeniae cseci), situated on the dorsal, ventral, right, and left surfaces; these cause four rows of sacculations (Haustra). The ventral band is almost entirely exposed or free (Taenia libera); it begins on the highest part of the base, extends along the medial side of the greater curvature, and joins the medial band near the apex. It is concealed only at its origin where the bowel is attached to the wall. The dorsal band extends along the lesser curvature from the termination of the ileum to the apex. The medial band extends along the medial part of the lesser curvature of the base, inclines ventrally further forward, and ends by joining the ventral band. It is covered at its origin by the adhesion to the right dorsal part of the great colon and beyond this by the cascal vessels and lymph glands. Medial to the termination of the ileum it projects from the wall of the bowel as a falciform band which can be felt distinctly although covered by vessels and fat. The lateral band is continuous with that of the right ventral part of the colon. It is covered by vessels, lymph glands and fat, but can be felt in its posterior part, where it forms a concave projecting edge. It inclines ventrally in front and may extend to the apex or fade out without reacliing Fig j()j—Orifices of of Horse. 1, Ileo-CEBcal orifice; 2, CEeco-colic orifice; 3, intervening fold. The ileo-caecal orifice (Ostium ileocaecale) is situated in the lesser curvature of the base, about two or three inches (ca. 5 to cm.) to the right of the median plane, and in a transverse plane through the first or second lumbar vertebra. The end of the ileum is partially telescoped into the caecum, so that, the orifice is sur- rounded by a fold of mucous mem
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