. The anatomy of the domestic animals. Veterinary anatomy. 424 DIGESTIVE SYSTEM OF THE HORSE to the first part of the colon by the caeco-colic fold. The apex is free, and conse- quently may vary in position. The cfficum has four longitudinal bands (Ta;nise 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 on
. The anatomy of the domestic animals. Veterinary anatomy. 424 DIGESTIVE SYSTEM OF THE HORSE to the first part of the colon by the caeco-colic fold. The apex is free, and conse- quently may vary in position. The cfficum has four longitudinal bands (Ta;nise 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. Till' medial band extends along the medial part of the lesser curvature of the base, inclines venf rally 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 CEecal vessels and l\-mph glands. Medial to the termination of the ileum it projects from the wall of the bowel as a falcifdrm 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 reacMng 363.—Orifices of Cecum of Ho orifice; 2, CEeeo-coIic orifice; 3, intervening fold. The ileo-caecal orifice (Ostium ileoca?cale) 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, antl in a transverse plane through the first or second lumbar vertebra. The end of the ileum is partially telescoped into the csecum, so that the orifice is sur- rounded by a fold of mucous membrane which encloses a
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