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What is the course and flexures of the duodenum in the dog?
  • Cranial portion,
  • cranial duodenal flexure,
  • descending portion,
  • ¬†caudal duodenal flexures/transverse portion,
  • ascending portion ,
  • ¬†duodenal jujenal flexure
  • What is the course and flesure of the of the duodenum in the su?
  • What other animals follow this?
  • Sigmoid loop, Cranial portion, cranial duodenal flexure, descending portion, caudal duodenal flexures/transverse portion, ascending portion , duodenal jujenal flesure
  • The sigmoid loop if also found in the Eq and Ru
At the duodenojujenal flexure, the _______ duodenum is attached to the _______ colon by the _________
the ascending duodenum is attached to the descending colon by the duodenocolic fold. The Duodenocolic fold marks the distal end of the duodenum
Which part of the small intestines is most mobile?
The jujenum
The transverse duodenum goes in which direction
From right to left
In the cow, the intestines are displaced completely to which direction due to the rumen?
Right
What structures mark the length of the illeum?
The illeocecal fold, the antimesenteric artery
What species differences of the illeum are important to note in the Eq?
The horse illeum has ileal papilla, which prevent ingesta reflex fromt eh caecum back into the illeum
On what side of the body does the cecum lie?
In the Eq, ru and carn the cecum lies on the right, in the su, it lies on the left
What are the three parts of the cecum?
Base, corpus, apex
What are taenia and where are they found on the horse?
  • Taenia are longitudinal bands that cause rows of sacculations (Haustra)
  • The horse has 4 Taenia: Medial Lateral Dorsal and Ventral
Discuss the taenia in the Su
The Su has three taenia. Medial, lateral and ventral
In which direction does the colon transversus go?
Right to left, in all species
The colon becomes the rectum when?
Upon entering the pelvic cavity
Before ending, the colon increases in diameter to form the _________, very prominantly seen in the horse.
Ampulla Recti. It is absent in the cat, sheep and goat
Describe the layers that make up the intestinal wall
  • Tunica Mucosa
  • Tela submucosa
  • Tunica muscularis
  • Peritoneum
What is the blood supply to the intestines?
  • The Cranial Mesenteric Artery has three major branches, the Caudal Pancreatic Duodenal Artery, the illeocolic artery and the jejunal artery. The illeocolic branches into the Mesenteric and Antimesenteric branch, the lateral and medial ceacal branch, and the colic, right colic and middle colic arteries. The colic supplies the proximal ascending colon and the rt colic supplies the distal ascending colon. The middle colic supplies the transverse colon.
  • The caudal Mesenteric artery branches ino the Left colic artery (that supplies the descending colon) and the Cranial Rectal artery (Rectum)
  • The veins associated with the intestines are the Cranial, and Caudal Mesenteric Veins and the Portal Vein, which drain into the Caudal Vena Cava
Describe the flexures of the colon in the Ca
  • Ascending
  • Transverse
  • Descending
Describe the flexures of the colon in the Eq
  • Right Ventral
  • Ventral diaphragmatic/sternal flexure
  • Left Ventral
  • Pelvic Flexure
  • Left Dorsal
  • Dorsal Diaphragmatic Flexure
  • Right Dorsal
  • Transverse
  • Descending
Describe the flexures of the colon in the Ru
  • Sigmoid Flexure/Proximal Loop
  • Centripetal Coils
  • Central Flexure
  • Centrifugal Coil
  • Distal Loop
  • Transverse
  • Descending
Describe the flexures of the colon in the Su
  • Centripetal Coils
  • Central Flexure
  • Centrifugal Coils
  • Transverse
  • Descending
What artery supplies the coils of the Su intestines?
Colic Artery
Which three structures are not covered by the Greater Omentum?
Uterus, Uterine Bladder and the Descending Duodenum
what are the four major pouches found in the caudal end of the peritoneal cavity and what are they between?
  • Fossa Pararectalis
  • Escavation Rectogenitalis
  • E. Uro Genitalis
  • E pubovesicales (which divides to a left and right portion
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