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Ileocecal Lip
Digestive System

Ileocecal Lip

Labrum ileocolicum

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Structure/ Morphology

The ileocecal lip is the inferior fold that forms the lower portion of the ileal orifice.

It’s composed of all the layers that make up the walls of the intestines folded back upon themselves. Thus, the mucosa, submucosa, and muscular layers of the terminal ileum lay internally against, in a mirror image fashion, the same layers of the colon within the lumen of the colon (Standring, 2016).

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Related parts of the anatomy

Key Features/Anatomical Relations

The ileocecal lip is the lower fold that forms the ileal orifice in the lumen of the colon. It’s located at the junction of the ileum and colon, and roughly at the junction between the cecum and ascending colon.


Together with the ileocolic lip, the ileocecal lip forms the frenulum of the ileal orifice and prevents material from passing retrogradely into the ileum (Moore, Dalley and Agur, 2013).


Moore, K. L., Dalley, A. F. and Agur, A. M. R. (2013) Clinically Oriented Anatomy. Clinically Oriented Anatomy 7th edn.: Wolters Kluwer Health/Lippincott Williams & Wilkins.

Standring, S. (2016) Gray's Anatomy: The Anatomical Basis of Clinical Practice. Gray's Anatomy Series 41 edn.: Elsevier Limited.

Learn more about this topic from other Elsevier products

Ileocecal Valve

ScienceDirect image

The medially placed ileocecal valve may produce a soft tissue indentation, so that the gas-filled cecum has the appearance of a coffee bean or kidney (Fig. 16-7B).

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