kids encyclopedia robot

Lumen (anatomy) facts for kids

Kids Encyclopedia Facts
Gut wall
Cross section of the gut. The lumen is the space in the middle also known as the volume.

In biology, a lumen (plural lumina) is the inside space of a tubular structure, such as an artery or intestine.

Two examples are the interior of a vessel, such as the central space in an artery, vein or capillary through which blood flows or the interior of the gastrointestinal tract.

kids search engine
All content from Kiddle encyclopedia articles (including the article images and facts) can be freely used under Attribution-ShareAlike license, unless stated otherwise. Cite this article:
Lumen (anatomy) Facts for Kids. Kiddle Encyclopedia.