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whitesmoke
at the bar

Registered: Sep 2002
Location: In the hospital
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Mesenteric Vessels, GI Tract Removal; Duodenum; Pancreas; Intestines
ASSIGNMENTS
Moore's Clinically Oriented Anatomy: 237-278
Essential Clinical Anatomy- Moore: 153-164
Grant's Dissector: 68-77 : Start at "Superior and Inferior Mesenteric Vessels"; Stop at "Interior Organ Inspection".
Grant’s Atlas of Anatomy: 94- 130
Clemente’s Dissector: #17
HELPFUL HINTS
1. Name that artery - As you dissect the branches of the superior and inferior mesenteric arteries remember that arteries are named by their region of distribution, not by their branching pattern of origin . In fact, you will encounter vessels today that don't look like any atlas figure. You can quickly name them if you apply the rule of thumb stated above.
2. Tie them tight - Make sure that your two ligatures around the rectum are tight (Grant's Dissector, pg. 71). Then, be sure to cut between the ligatures. When cutting the esophagus, tie a single ligature and cut superior to it.
3. Freeing the ascending colon and descending colon - To free the ascending colon and descending colon from the posterior body wall you will have to break through the peritoneum as it sweeps off the lateral surface of each organ onto the posterior body wall. After you break the peritoneum, break the fascia that fuses the colon to the posterior body wall with your hand. This approach from the lateral side preserves and protects the blood vessels to these organs.
4. Cut twice to free the liver - When you come to the part that says to cut across the inferior vena cava (Grant's Dissector, pg. 72) in order to remove the liver, you will need to cut the inferior vena cava twice: once superior to the liver as the instructions say to do and once inferior to it. This second cut will free the liver from the inferior vena cava and leave a short piece of the inferior vena cave within the liver. Look inside of this piece of inferior vena cava to see the openings of the hepatic veins.
WHEN YOU FINISH THIS SECTION, YOU SHOULD BE ABLE TO PERFORM THE FOLLOWING TASKS AND ANSWER THESE QUESTIONS
1. Draw and label a diagram of the blood supply to the small intestine.
2. Does the artery of the vermiform appendix pass ventral or dorsal to the ileum?
3. The left colic artery anastomoses with what vessel(s)?
4. The origin of the inferior mesenteric artery lies posterior to what organ?
5. What part of the gut does the inferior mesenteric artery supply?
6. If the inferior mesenteric artery is obstructed, give the most direct collateral route of blood to the descending colon from the abdominal aorta.
7. Name the gross anatomical features that distinguish the large intestine from the small intestine.
8. What structures lie posterior to the neck of the pancreas?
9. What is the primary blood supply to the body of the pancreas?
10. What does the term "retrocecal appendix" mean?
gross anatomy ...the joys of medical school
___________________
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Oct-22-2003 16:08
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Dr. Cfire
Supreme tranceaddict

Registered: Apr 2003
Location: Calgary
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Oct-28-2003 19:25
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jdat
Jay Van Dat

Registered: Oct 2001
Location: I dont even know
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Oct-28-2003 19:35
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