The document outlines the key differences between the jejunum and ileum, highlighting aspects such as location, wall thickness, lumen width, and vascularization. Specific features are compared, including the mesentery structure, mucosal folds, villi characteristics, and presence of Peyer's patches. Overall, it provides a detailed comparison of the anatomy and histology of these two segments of the small intestine.

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DIFFERENCES BETWEEN
JEJUNUM AND ILEUM

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S.N
.
Features Jejunum Ileum
1 Location Upper and left part of
intestinal area
Lower and right part of
intestinal area
2 Wall Thicker and more vascular Thinner and less vascular
3 Lumen Wider and often empty Narrower and often loaded

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S.N. Features Jejunum Ileum
4 Mesentery :
a. Windows
b. Arterial arcades
c. Vasa recta
d. Fat
a. Longer and narrower
b. 1 or 2 rows
c. Longer and fewer
d. Less abundant
a. Shorter and wider, not
clearly visible because of
more fat
b. 3 or 6 rows
c. Shorter and numerous
d. More abundant, masks
windows

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S.N. Features Jejunum Ileum
5. Circular mucosal folds Larger and more closely
set
Smaller and sparse
6. Villi Large, thick (leaf like) and
more abundant
Shorter, thinner(finger like)
and less abundant
7. Peyer’s patches Absent Present
8. Solitary lymphatic
follicles
Fewer More numerous

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