View source for Lamina propria



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  Image        = Illu stomach layers.jpg |
  Caption      = Layers of Stomach Wall:<BR>1. [[Serosa]]<BR>2. [[Tela subserosa]]<BR>3. [[Muscularis]]<BR>4. Oblique fibers of muscle wall<BR>5. [[Muscular coat|Circular muscle layer]]<BR>6. [[Muscular coat|Longitudinal muscle layer]]<BR>7. [[Submucosa]]<BR>8. Lamina [[muscularis mucosae]]<BR>9. [[Mucosa]]<BR>10. [[Lamina propria]]<BR>11. [[Epithelium]]<BR>12. Gastric glands<BR>13. [[Gastric pits]]<BR>14. [[Villous folds]]<BR>15. Gastric areas (gastric surface) |
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  Caption2     = Section of the human esophagus. Moderately magnified. The section is transverse and from near the middle of the gullet.<BR>a. [[Fibrous covering]].<BR>b. Divided fibers of [[longitudinal muscular coat]].<BR>c. [[Transverse muscular fibers]].<BR>d. [[Submucous]] or '''areolar''' layer.<BR>e. [[Muscularis mucosae]].<BR>f. [[Mucous membrane]], with vessels and part of a [[lymphoid nodule]].<BR>g. [[Stratified epithelial lining]].<BR>h. [[Mucous gland]].<BR>i. [[Gland duct]].<BR>m’. [[Striated muscular fibers]] cut across. |
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==Overview==
The '''lamina propria''' is a constituent of the moist linings known as mucous membranes or [[mucosa]], which line various tubes in the body (such as the respiratory tract, the gastrointestinal tract, and the urogenital tract). 

The lamina propria (more correctly ''lamina propria mucosae'') is a thin layer of [[areolar connective tissue|loose connective tissue]] which lies beneath the [[epithelium]] and together with the epithelium constitutes the [[mucosa]]. As its Latin name indicates it is a characteristic component of the mucosa, "the mucosa's own special layer". Thus the term [[mucosa]] or mucous membrane always refers to the combination of the epithelium plus the lamina propria.<ref>H.G. Burkitt et al., eds., ''Wheater's Functional Histology, 3rd ed.''</ref>

The lamina propria contains [[capillaries]] and a central [[lacteal]] (lymph vessel) in the [[small intestine]], as well as lymphoid tissue. Lamina propria also contains glands with the ducts opening on to the mucosal epithelium, that secrete mucus and serous secretions. 

==References==
<references/>

==See also==
* [[submucosa]]
* [[basal lamina]]

==External links==
* {{eMedicineDictionary|Lamina+propria}}
* {{AnatomyAtlasesMicroscopic|10|198}}
* {{BUHistology|10802loa}} - "Digestive System: Alimentary Canal - esophagus "
* {{BUHistology|03301loa}} - "Connective Tissue: lamina propria; loose connective tissue "
* {{UIUCHistologySubject|272}}
* {{UCDavisOrganology|Digestive/mammal/system1/system3}} - "Mammal, whole system (LM, Low)"
* [http://neuromedia.neurobio.ucla.edu/campbell/connective_tissue/wp_images/107%20submucosa%20lamina%20propria.jpg Slide at ucla.edu]


{{TissueLayers}}
[[Category:Histology]]
[[fr:Lamina propria]]

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