(Meso)colon descendens mobilized

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The video shows a human dissection specimen in which the descending colon and mesocolon are mobilized. In the embryological period they got attached to the back wall of the abdomen, leading to their so-called secondary retroperitoneal position. These attachments can be relatively easily detached. Such detachment procedures form the basis of abdominal surgery.

In this video, first the jejunum and ileum are laid aside. Then the mobilized descending colon and mesocolon are lifted. The blood vessels in the descending mesocolon can be seen. The parietal peritoneum of the body's side wall is shown. The area to which the descending colon and mesocolon lay attached, is pointed at. Before the embryological attachment the original back wall peritoneum lay here. Finally, the the mobilized descending colon and mesocolon are laid back to the location where they lay.

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