Abdominal Viscera (Veterinary Anatomy)

Alimentary Canal (esophagus, stomach, intestine) 
a. Esophagus — cervical, thoracic, abdominal regions (all striated in dog; proximal 2/3’s striated in cat ) b. Stomach: Sphincters: 1) Cardiac (at cardia) and 2) Pyloric (at pylorus) Region: a) Cardiac (surrounding cardia) b) Fundic (fundus = blind end) c) Body d) Pyloric (antrum & canal) also, lesser curvature — LESSER OMENTUM greater curvature — GREATER OMENTUM c. Small Intestine: 1) Duodenum — MESODUODENUM regions: a) Cranial flexure b) Descending duodenum c) Caudal flexure d) Ascending duodenum e) Duodenal-jejunal flexure 2) Jejunum — MESOJEJUNUM ----->MESENTERY 3) Ileum — MESOILEUM -----> MESENTERY antimesenteric vessel; ileocecal fold ileal (ileocolic) orifice d. Large Intestine: 1) Cecum (blind end; no appendix) cecocolic orifice; ileocecal fold 2) Colon — MESOCOLON Regions: a) Ascending colon b) Right colic flexure c) Transverse colon d) Left colic flexure e) Descending colon 3) Rectum — MESORECTUM 4) Anal canal (retroperitoneal) Anus = external opening Sphincters — a) Internal anal sphincter (smooth m.), b) External anal sphincter (striated m.)