ileum


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ileum

 [il´e-um]
the distal portion of the small intestine, extending from the jejunum to the cecum.
duplex ileum congenital duplication of the ileum.

il·e·um

(il'ē-ŭm), [TA] Do not confuse this word with ilium.
The third and longest portion of the small intestine, about 12 feet in length in humans (by postmortem measurement), extending from an indistinct junction with the jejunum to the ileocecal opening. Overall, it is distinct from jejunum in being typically smaller in diameter with thinner walls, having smaller and less complex circular folds (plicae circulares), its mesentery having more fat and its arteries (ileal arteries) forming more tiers of arterial arcades with shorter vasa recta.
[L. fr. G. eileō, to roll up, twist]

ileum

/il·e·um/ (il´e-um) the distal portion of the small intestine, extending from the jejunum to the cecum.
duplex ileum  congenital duplication of the ileum.

ileum

(ĭl′ē-əm)
n. pl. il·ea (-ē-ə)
The terminal portion of the small intestine extending from the jejunum to the cecum.

il′e·al adj.

ileum

[il′ē·əm] pl. ilea
Etymology: L, intestine
the lower-third distal portion of the small intestine, extending from the jejunum to the cecum. Internally it has a few small circular folds and numerous clusters of lymphatic tissues. It ends in the right iliac fossa, opening into the medial side of the large intestine. See also ileocecal valve. ileac, ileal, adj.

il·e·um

(il'ē-ŭm) [TA]
The third portion of the small intestine, about 3.6 m (12 ft) in length, extending from the jejunum to the ileocecal opening.
[L.L. bowel, fr. L. ilium, groin, flank, hip]

ileum

The third part of the small intestine lying between the JEJUNUM and the start of the large intestine, the CAECUM. The contents of the ileum are of the consistency of a watery mud and almost all nutrients have been absorbed by about the middle of the ileum.

ileum

that part of the intestine lying between the duodenum and the colon where digestion is completed by enzymes that break down carbohydrates, fats and proteins (see SMALL INTESTINE). The ileum is the main area of the gut for absorption of food.

Ileum

The lowest part of the small intestine, located beyond the duodenum and jejunum, just before the large intestine (the colon).
Mentioned in: Enterostomy, Ostomy

il·e·um

(il'ē-ŭm) [TA]
The third and longest portion of the small intestine, about 12 feet in length in humans.
[L.L. bowel, fr. L. ilium, groin, flank, hip]

ileum

the distal portion of the small intestine, extending from the jejunum to the cecum. See also ileal.

duplex ileum
congenital duplication of the ileum.
ileum-umbilicus fistula
a persistent and patent Meckel's diverticulum.
References in periodicals archive ?
Effects of ACh with and without Atropine on Ileum in Sham-fed and BPA-fed Groups
The digestive tract was removed, and the crop, proventriculus, gizzard, pancreas, duodenum, jejunum, ileum, ceca, and colon were excised.
05) were also confirmed in height and the surface area of villi as well as crypt depth in the jejunum and ileum in day-old broiler chickens, but these differences were not as predominant as in the case of the duodenum (Table 2).
Therefore, during appendectomy, ileum should be checked for the presence of Meckel's diverticulum, if it is found to be present it should be removed along with appendix.
This case demonstrates an unusual localisation of an IUCD in the ileum, but the particularity is that we found it after 29 years of its insertion and and the patient had no specific gastrointestinal symptoms.
12) The inflammatory changes may also encompass the ascending colon and the distal ileum and have also been found isolated to the small bowel.
The adhesions would have made one loop of the ileum relatively static, around which another dynamic loop of ileum may have encircled.
Although a soft tissue density linear band was seen extending from the distal ileum, its insertion at the anterior abdominal wall was not identified.
In the published English literature, the lesion was located in the ileum in approximately 75% of pediatric patients in whom the site of the lesion was determined, and Meckel's diverticulum was identified in 16.
TCDF led to a significant increase in mRNAs that encode factors in the ileum involved in inflammatory signaling, such as Il-1[beta], Il-10, Tnf-[alpha], Saa1, and Saa3 (Figure 3A); these changes were AHR dependent (Figure 3B).
All the routine hematological and radiological investigations were carried out; the patient underwent laparotomy and was diagnosed with small bowel obstruction due to appendicular knot encircling the terminal ileum.