ANATOMY OF THE DIGESTIVE SYSTEM

©David B. Fankhauser, Ph.D.,
Professor of Biology and Chemistry
University of Cincinnati Clermont College,
Batavia OH 45103
ileocecal valve, labeled
liver, stomach and
duodenum, labeled
This page has been accessed Counter times since 3 June 2002. 
1 May 1990, rvsd 26 Mar 94, 30 Mar 95, 24 March 96, 24 Mar 97, 29 Mar 98, 28 Mar 00, 26 April 01
 junction of ileum and
colon, labeled

In the cat, identify the following organs and features. The page numbers refer to Gilbert's Pictorial Anatomy of the Cat.

Make three illustrations:
    1)  Head, esophagus and stomach (dissected open to show rugae)
    2)  Liver and its features
    3)  Stomach through the rectum
 

I. HEAD THROUGH STOMACH
 
salivary glands: (pp 20-21, 38)
    parotid & duct around and below the ear
    submaxillary below parotid, under posterior facial vein

Here is a labeled view showing the parotid and submaxillary glands.
esophagus in cervical, thoracic and diaphragm region

stomach (pp. 43-45, 49)
    lesser and greater curvatures
    fundus uppermost rounded portion
    lesser omentum connects to liver
    left gastric artery branches fr celiac art.
    greater omentum hangs below
    cardiac orifice entry into stomach
    pyloric sphincter exit from stomach

Here is a labeled image of the stomach.
    

cut along the greater curvature to open stomach and see:
    rugae inside stomach
    contents What did it last eat?
    Any parasites?

II. LIVER
 
liver : (pp. 42-46)
    coronary ligament superior edge
    gall bladder shriveled between lobes
    common bile duct lies behind duodenum

(Note that the duodenum is green where the bile duct empties into it. )

liver : (pp. 42-46)
    falciform ligament anterior edge
    round ligament anterior edge of falc. lig
    coronary ligament superior edge

Here is a labeled image of the liver and its ligaments.

III. STOMACH THROUGH RECTUM
 

stomach (outline)
    pyloric sphincter

duodenum first few cm after stomach
pancreas (p. 50) lies in curve of duodenum
    pancreatic duct joins bile duct at duodenum

cut open the duodenum to see the villi

mesenteries : (p. 49)
    superior mesenteric artery
    vessels of the hepatic portal system (yellow)
    hepatic portal vein (large & yellow)


Cat Colon
ileum  (terminal part of sm intestine)
    lymph nodes
    ileocecal valve

cecum (p. 49)  (blind proximal end of colon below ileocecal valve)


Here is a labeled image of the junction of the ileum and the colon.
 
Herre is a labeled image of the lower GI tract of the cat

jejunum (after duodenum)
make a 2" longitudinal cut, note:
    villi like velvet
    (see any parasites? probably Ascaris)

ascending colon (indistinct in cat)

transverse colon (indistinct in cat)

descending colon (indistinct in cat)

sigmoid colon (indistinct in cat)

rectum  (straight terminal portion of colon)