Small and Large Intestine - Page 4 of 7
| Add the cecum. | |
| Add the right colic artery. | |
| Add the middle colic artery. | |
| Add the ascending colon. |
Note that the ileocolic and the right colic perfuse the cecum, and ascending colon
Does this explain the removal of the terminal ileum and the right hemicolon in the scenerio of the premature infant? |
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Yes. |
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Note the origin of the middle colic artery on the superior mesenteric artery.
| Add the transverse colon. |
Why does the transverse colon dip down so much? |
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The ascending colon and the decending colon are both attached the lateral gutters of the posterior abdomenal wall. The transverse colon is not attached. Review the embryology of the rotation and elongation of the colon to see how this occurs. |
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Remember that the transverse colon is a watershed area that can be supplied by the middle colic or inferior mesenteric artery.
What is the clinical significance of this arrangement? |
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When removing the part of the transverse colon, the surgeon must pay attention to the collateral circulation before removing any part of the transverse colon. |
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