💡 Light unit 🩻 Inner space

lumen

1 8.9

The space inside a tube in the body, like an artery or intestine

noun
/ˈluːmən/

Specialized

: lumen

As long as even a small lumen (2 to 3 mm) is present, hearing loss is minimal.
tracheal lumen
lumen of the duct
airway lumen

So we can start to make those structures which are we call them rosette like structures that that open up the lumen.

Examples

The lumen of the artery was much smaller due to the buildup of plaque.
Our examination revealed that the lumen of the patient's metal tracheostomy tube was compromised by a tumor mass.

Academic text (2001)
This is the lumen side of the membrane.
There are the ductal cells that lie on the outside of of that lumen that serve as sort of the support.
But if you add that fraction early, the protein is in the lumen of the microsomes.
Here, we hypothesize that blood intensity in the lumen region is constant.

Academic text (2016)
As the disease progresses over months or years, the lumen progressively narrows.

Academic text (2001)
In the healthy gut environment, out in the gut lumen, we have a mixture of peacekeeping bacteria and pathogens.
The lumen of the cochlear aqueduct is normally filled with soft tissue, but a lumen remains into adulthood.

Academic text (2005)
The lumen of the duct is usually obliterated by the 9th or 10th week of gestation.

Academic text (2006)

Synonyms

locule

vslumen

Specialized

9.9

A small hollow space inside a plant or animal organ holding seeds and other parts

is the inside space specific to tubular structures rather than general cavities

Surface Forms

lumen singular

lumens plural

Etymology

Lumen comes from Latin lumen meaning 'light' or 'opening'. In the body the idea of an 'opening' became the word for the 'open space' or hollow inside a tube such as an artery or intestine, so lumen is the inside place where food or blood passes.