Get Lumen Anatomy essential facts below. View Videos or join the Lumen Anatomy discussion. Add Lumen Anatomy to your PopFlock.com topic list for future reference or share this resource on social media.
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.  It comes from Latin lumen, meaning 'an opening'.