Jackson's membrane

[jăksənz]
n.
  1. A thin vascular membrane that covers the anterior surface of the ascending colon from the cecum to the right flexure and that may cause the bowel to kink and become obstructed.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.