diverticulum /di·ver·tic·u·lum/ (di″ver-tik´u-lum) pl. diverti´cula a circumscribed pouch or sac occurring normally or created by herniation of the lining mucous membrane through a defect in the muscular coat of a tubular organ.
ileal diverticulum.
diverticulum [di″ver-tik´u-lum] (pl. diverti´cula) (L.)
allantoic diverticulum the endodermal sacculation that becomes the allantois; in humans it is an outpouching of the caudal wall of the yolk sac that becomes the urachus.
ileal diverticulum , Meckel's diverticulum an occasional sacculation or appendage of the ileum, derived from an unobliterated yolk stalk.
ileal diverticulum.
diverticulum [di″ver-tik´u-lum] (pl. diverti´cula) (L.)
a circumscribed pouch or sac occurring normally or created by herniation of the lining mucous membrane through a defect in the muscular coat of a tubular organ. See illustration.
Intestinal diverticula. From Dorland's, 2000.
ileal diverticulum Meckel's diverticulum.
intestinal diverticulum a pouch or sac formed by hernial protrusion of the mucous membrane through a defect in the muscular coat of the intestine.
Meckel's diverticulum an occasional sacculation or appendage of the ileum, derived from an unobliterated yolk stalk.
pressure diverticulum (pulsion diverticulum) a sac or pouch formed by hernial protrusion of the mucous membrane through the muscular coat of the esophagus or colon as a result of pressure from within.
traction diverticulum a localized distortion, angulation, or funnel-shaped bulging of the esophageal wall, due to adhesions resulting from an external lesion.
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