High-Yield Points:
• Parts: Cecum → Ascending colon (with spiral loop) → Transverse → Descending colon → Rectum.
• Cecum in ox: blind sac, ~75 cm long, lies in upper right flank; apex points caudally.
• Spiral colon = a characteristic flat, disc-shaped coil in cattle and small ruminants with centripetal and centrifugal turns. It is a useful identifying feature but not an isolated diagnostic test.
• The bovine cecum occupies the right abdomen and may be approached surgically from the right flank when clinically indicated; cecocentesis or biopsy must not be presented as a routine landmark procedure without a current clinical protocol.
• Functions: water absorption, microbial fermentation (cecum), faecal pellet formation.
• Rectum is covered later under pelvic viscera.

Bovine Large Intestine

Cecum: A blind tube ~75 cm long, lying in the dorsal right flank. The base receives the ileum and continues as the colon; the free apex points caudally. The cecum is the site of secondary microbial fermentation in ruminants.

Ascending Colon: Has proximal, spiral and distal loops. In ruminants the spiral loop (ansa spiralis) forms a relatively flat disc with centripetal turns, a central flexure and centrifugal turns. Pigs also have a spiral ascending colon, but it is cone-shaped rather than a flat ruminant disc.

Transverse Colon: Crosses the midline cranial to the root of the mesentery.

Descending Colon: Passes caudally and continues at the pelvic inlet as the rectum; cattle do not possess a human-like sigmoid colon.

Surgical importance: Cecal dilatation/torsion in dairy cattle presents as right-sided ping. The right flank is the standard surgical window (cecotomy).

Blood supply: Cranial mesenteric artery (cecum, ascending, transverse) and caudal mesenteric artery (descending colon, rectum).