Lumen (anatomy)


Lumen (anatomy)

A lumen (Lat. "lūmen", an opening or light) (pl. lumina) is the inside space or lining of a tubular structure, such as an artery or intestine. [Stedman's Medical Dictionary, 24th ed.] For example:

* The interior of a vessel, such as the central space in an artery or vein through which blood flows.
* The interior of the gastrointestinal tract [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
]
* The pathways of the bronchi in the lungs
* The interior of urinary collecting ducts
* The single pathway of the vagina
* Within a cell, the inner membrane space of a Thylakoid, endoplasmic reticulum, Golgi apparatus, lysosomes. mitochondria or microtubule.

References

ee also

*Thylakoid lumen


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Lumen — can mean:* Lumen (unit), the SI unit of luminous flux * Lumen (anatomy), the cavity or channel within a tubular structure * Thylakoid lumen, the inner membrane space of the chloroplast * 141 Lumen, an asteroid discovered by the French astronomer… …   Wikipedia

  • lumen — lu·men || luːmÉ™n n. unit for measuring the rate at which light is transmitted (Optics); cavity, hollow space (Anatomy, Botany) …   English contemporary dictionary

  • lumen — lumen1 [ lu:mɛn] (abbrev.: lm) noun Physics the SI unit of luminous flux, equal to the amount of light emitted per second in a unit solid angle of one steradian from a uniform source of one candela. Origin C19: from L., lit. light . lumen2 [… …   English new terms dictionary

  • lumen — /ˈlumən / (say loohmuhn) noun (plural lumens or lumina /ˈlumənə/ (say loohmuhnuh)) 1. Optics the derived SI unit of luminous flux; the light emitted in a unit solid angle of one steradian by a point source having a uniform intensity of one… …   Australian English dictionary

  • Lens (anatomy) — Crystalline lens (anatomy) Light from a single point of a distant object and light from a single point of a near object being brought to a focus by changing the curvature of the lens …   Wikipedia

  • Adventitia — Infobox Anatomy Name = PAGENAME Latin = GraySubject = GrayPage = Caption = Layers of Esophageal Wall: 1. Mucosa 2. Submucosa 3. Muscularis 4. Adventitia 5. Striated muscle 6. Striated and smooth 7. Smooth muscle 8. Lamina muscularis mucosae 9.… …   Wikipedia

  • Inner space — may refer to:* Inner Space (album), a 1966 jazz music album by Chick Corea * Inner Space, A conference of closed circuit rebreather diving and CCR training held annually in the Grand Caymans. * University of Rhode Island, Inner Space Center *… …   Wikipedia

  • endocrine system, human — ▪ anatomy Introduction  group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… …   Universalium

  • renal system — ▪ anatomy Introduction  in humans (human body), organ system that includes the kidneys, where urine is produced, and the ureters, bladder, and urethra for the passage, storage, and voiding of urine.       In many respects the human excretory, or… …   Universalium

  • human cardiovascular system — ▪ anatomy Introduction       organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes. It is a closed tubular system in which the… …   Universalium


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.