Lumen (anatomy)
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2008-07-06T16:16:14Z
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Added new language: portuguese
[[Image:Anatomy artery.png|thumb|300px|Artery anatomy, showing lumen]]
{{Otheruses|Lumen}}
[[Image:Gut wall.svg|thumb|right|General structure of the gut wall showing the lumen in the middle ]]
A '''lumen''' (Lat. ''lūmen'', an opening or light) (pl. lumina) is an inner space, lining or cavity.
* The interior of a vessel within the body, such as the small central space in an [[artery]] or [[vein]], or any of their relating vessels through which [[blood]] flows.
* The [[inner membrane]] space of a [[Thylakoid]], [[endoplasmic reticulum]], [[Golgi apparatus]], or [[microtubule]].
On a larger scale it may refer to:
* The interior of the [[gastrointestinal tract]] <ref>{{cite book
| last = Adds
| first = John
| authorlink =
| coauthors = Erica Larkcom, Ruth Miller
| title = Exchange and transport, energy and ecosystems
| publisher = Nelson Advanced science (Nelson Thornes [http://www.nelsonthornes.com web site])
| date =
| location =
| pages = 16
| isbn =0-7487-7487-4 }}</ref>
* The pathways of the [[bronchi]] in the [[lungs]]
* The interior of [[collecting duct system|urinary collecting ducts]]
* The single pathway of the [[vagina]]
==References==
<references/>
==See also==
*[[Thylakoid lumen]]
{{Tissue layers}}
[[Category:Anatomy]]
[[Category:Blood]]
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