Simple columnar epithelium
3306795
189885226
2008-02-08T03:32:34Z
201.21.208.134
{{Infobox Anatomy |
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Caption = Vertical section of a villus from the dog’s small intestine. X 80. (Simple columnar epithelium labeled at right, third from top.) |
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Caption2 = Transverse section of a [[villus]], from the human [[intestine]]. X 350.<BR>a. [[Basement membrane]], here somewhat shrunken away from the epithelium.<BR>b. [[Lacteal]].<BR>c. [[Columnar epithelium]].<BR>d. Its striated border.<BR>e. [[Goblet cells]].<BR>f. [[Leucocytes]] in epithelium.<BR>f’. Leucocytes below epithelium.<BR>g. [[Bloodvessels]].<BR>h. [[Muscle cells]] cut across. |
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A '''simple columnar epithelium''' is a [[columnar epithelium]] that is uni-layered. In humans, a simple columnar epithelium forms a lining in the [[uterus]] and in most organs of the [[digestive tract]] including the [[stomach]], [[small intestine]], and [[large intestine]].
Simple columnar epithelia are further divided into two categories: nonciliated and ciliated.
==Nonciliated==
''Nonciliated columnar epithelia'' do not have [[cilia]], and are found in the [[gastrointestinal tract]] and the [[gallbladder]] where they perform [[secretion]] and [[absorption]].
==Ciliated==
''Ciliated columnar epithelia'' move [[mucus]] and other substances via cilia, and are found in the upper [[respiratory tract]], the [[Fallopian tubes]], the [[uterus]], and the central part of the [[spinal cord]].
Ciliated columnar epithelium lines the [[lumen]] of the [[uterine tube]], where currents generated by the [[cilia]] propel the [[egg cell]], toward the [[uterus]].
==Additional images==
<gallery>
Image:Illu epithelium.jpg|Types of epithelium.
Image:Gallenblase - Schnitt.jpg|Histology of [[gallbladder]].
Image:Illu stomach layers.jpg|Layers of [[stomach]] wall.
Image:Gray1169.png|Vertical section of mucous membrane of human [[uterus]].
Image:Deroceras laeve epithelium 400 saturn.jpg|[[skin]] of [[slug]] ''[[Deroceras leave]]''
Image:Simple columnar.jpg|lining of [[gallbladder]]
</gallery>
==References==
<references/>
==External links==
* {{KansasHistology|epithel|epith05}} "Gall bladder" - Simple columnar epithelium
* {{UIUCHistologySubject|1061}} - Uterine tube lumen
{{anatomy-stub}}
{{Epithelial tissue}}
[[Category:Epithelial cells]]
[[sr:једнослојан цилиндричан епител]]
[[pt:Epitélio colunar simples]]