Lumen (anatomy) 3432531 223934488 2008-07-06T16:16:14Z 201.47.172.77 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]] [[fr:Lumen (anatomie)]] [[id:Lumen (anatomi)]] [[sl:Svetlina]] [[sv:Lumen (biologi)]] [[pt:Lumen (Anatomia)]] {{circulatory-stub}}