Difference between revisions of "Ileum - Anatomy & Physiology"

Revision as of 08:52, 17 July 2008

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Introduction

The ileum is the terminal portion of the small intestine and continues from the jejunum. It opens into the caecum at the ileocaecal orifice. The intestinal epithelium is mainly absorptive, with much less digestion occuring compared to the duodenum and the jejunum.

Structure

The ileum is the terminal portion of the small intestine.
The boundary between the ileum and jejunum is arbitrarily distinguished by the position of the ileocaecal fold.
It is more muscular and firmer than the jejunum.
It terminates at the ileocaecocolic junction.

Vasculature

The cranial mesenteric artery supplies blood to the ileum.
see jejunum

Histology

Peyer's Patches, part of the mucosal associated lymphoid tissue (MALT), are present throughout the ileum and ileocaecal junction.
- They contain B and T lymphocytes.
- B lymphocytes exist in follicles.

Links

Pathology of the Small and Large Intestines

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+<big><center>[[Alimentary - Anatomy & Physiology|'''BACK TO ALIMENTARY - ANATOMY & PHYSIOLOGY''']]</center></big><big><center>
+[[Small Intestine - Anatomy & Physiology|'''BACK TO SMALL INTESTINE - ANATOMY AND PHYSIOLOGY]]</center></big>
 ==Introduction==
+The ileum is the terminal portion of the [[Small Intestine - Anatomy & Physiology|small intestine]] and continues from the [[Jejunum - Anatomy & Physiology|jejunum]]. It opens into the [[Caecum - Anatomy & Physiology|caecum]] at the ileocaecal orifice. The intestinal epithelium is mainly absorptive, with much less digestion occuring compared to the duodenum and the jejunum.
-The ileum is the terminal portion of the [[Small Intestine Overview - Anatomy & Physiology|small intestine]] and continues from the [[Jejunum - Anatomy & Physiology|jejunum]]. It opens into the [[Caecum - Anatomy & Physiology|caecum]] at the '''ileocaecal orifice'''. The intestinal epithelium is mainly absorptive, with much less digestion occurring compared to the [[Duodenum - Anatomy & Physiology|duodenum]] and the [[Jejunum - Anatomy & Physiology|jejunum]].
+==Structure==
+*The ileum is the terminal portion of the small intestine.
-==Structure==
+*The boundary between the ileum and [[Jejunum - Anatomy & Physiology|jejunum]] is arbitrarily distinguished by the position of the ileocaecal fold.
+*It is more muscular and firmer than the [[Jejunum - Anatomy & Physiology|jejunum]].
-The boundary between the ileum and jejunum is arbitrarily distinguished by the position of the ileocaecal fold. It is more muscular and firmer than the jejunum and it terminates at the '''ileocaecocolic junction'''.
+*It terminates at the ileocaecocolic junction.
 ==Vasculature==
+*The cranial mesenteric artery supplies blood to the ileum.
-The cranial mesenteric artery supplies blood to the ileum.
+*see [[Jejunum - Anatomy & Physiology|jejunum]]
 ==Histology==
+*'''[[Peyer's Patches - Anatomy & Physiology|Peyer's Patches]]''', part of the mucosal associated lymphoid tissue (MALT), are present throughout the ileum and ileocaecal junction.
-'''[[Peyer's Patches - Anatomy & Physiology|Peyer's Patches]]''', part of the [[:Category:Mucosal Associated Lymphoid Tissue|mucosal associated lymphoid tissue (MALT)]], are present throughout the ileum and ileocaecal junction. They exist within the lamina propria and contain B and T [[:Category:Lymphocytes|lymphocytes]]. B lymphocytes exist in follicles.
+**They contain B and T lymphocytes.
+**B lymphocytes exist in follicles.
 ==Links==
+[[The Small and Large Intestines|Pathology of the Small and Large Intestines]]
-'''Click here for information on [[Intestines, Small and Large - Pathology|pathology of the Small and Large Intestines]].'''
+*[http://stream2.rvc.ac.uk/Anatomy/bovine/Pot0048.mp4 Pot 48 The Small and Large intestine of the Ruminant]
+*[http://stream2.rvc.ac.uk/Anatomy/feline/pot0357.mp4 Pot 357 The Feline Abdomen]
-'''Click here for information on [[Peyer's Patches - Anatomy & Physiology|Peyer's Patches]].'''
-{{Template:Learning
-|flashcards = [[Ileum - Anatomy & Physiology - Flashcards|Ileum anatomy]]
-|videos = [[Video: Ruminant small and large intestine potcast|Ruminant small and large intestine potcast]]<br>[[Video: Ruminant abdomen potcast|Ruminant abdomen potcast]]<br>[[Video: Foal gastrointestinal tract potcast|Foal gastrointestinal tract potcast]]<br>[[Video: Lateral view of the feline thorax and abdomen potcast|Lateral view of the feline thorax and abdomen potcast]]<br>[[Video: Female dog abdomen dissection|Female dog abdomen dissection]]<br>[[Video: Abdominal viscera of the horse dissection|Abdominal viscera of the horse dissection]]<br>[[Video: Equine left-sided abdominal and thoracic topography dissection|Equine left-sided abdominal and thoracic topography dissection]]<br>[[Video: Equine left-sided abdominal and thoracic topography dissection 2|Equine left-sided abdominal and thoracic topography dissection 2]]<br>[[Video: Ovine large and small intestine dissection|Ovine large and small intestine dissection]]<br>[[Video: Porcine abdomen dissection|Porcine abdomen dissection]]
-|Vetstream = [https://www.vetstream.com/canis/Content/Disease/dis02601.asp Ileus]
-}}
-{{OpenPages}}
-[[Category:Small Intestine - Anatomy & Physiology]]
-[[Category:A&P Done]]