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Diseases of the colon and rectum
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Diseases of the colon and rectum
- Authors: Albert E. Jergens and Debra L. Zoran
- From: BSAVA Manual of Canine and Feline Gastroenterology
- Item: Chapter 21, pp 203 - 212
- DOI: 10.22233/9781910443361.21
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Copyright:
- Publication Date: January 2005
Abstract
PLEASE NOTE THAT A MORE RECENT EDITION OF THIS TITLE IS AVAILABLE IN THE LIBRARY
The large intestine serves numerous physiological roles: maintenance of fluid and electrolyte balance, storage site for faecal material, and reservoir for a complex microbial ecosystem that performs diverse functions. Normal colonic physiology may be disrupted by disease that causes diarrhoea or constipation. The average length of the colon in dogs and cats is 60-75 cm, and it is divided into three anatomically distinct regions: the ascending, transverse and descending colonic segments. This chapter covers the Colonic anatomy and physiology; the Anorectum; Diagnostic approach; and Diseases of the colon.
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Figures
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21.1
Anatomy of the canine colon. a = greater curvature of the stomach; b = descending duodenum; c = terminal ileum; d = caecum; e = ascending colon; f = transverse colon; g = segmental contraction; h = descending colon; i = rectum; j = anus; k = hepatic flexure; l = splenic flexure. © 2005 British Small Animal Veterinary Association
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21.1
Anatomy of the canine colon. a = greater curvature of the stomach; b = descending duodenum; c = terminal ileum; d = caecum; e = ascending colon; f = transverse colon; g = segmental contraction; h = descending colon; i = rectum; j = anus; k = hepatic flexure; l = splenic flexure.
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21.2
Structure of the colonic mucosa. a = crypt openings; b = lamina propria; c = columnar epithelial cells; d = crypt; e = goblet cell. © 2005 British Small Animal Veterinary Association
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21.2
Structure of the colonic mucosa. a = crypt openings; b = lamina propria; c = columnar epithelial cells; d = crypt; e = goblet cell.
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21.5
Diagnostic evaluation of colorectal disorders. (Modified from
Twedt, 1997
) © 2005 British Small Animal Veterinary Association
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