Lumen (anatomy)

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

lysosomallysosomeslysosomal enzymes
*thylakoid, endoplasmic reticulum, Golgi apparatus, lysosome, mitochondrion, or microtubule
A lysosome has a specific composition, of both its membrane proteins, and its lumenal proteins.

Golgi apparatus

Golgitrans-Golgi networkGolgi bodies
*thylakoid, endoplasmic reticulum, Golgi apparatus, lysosome, mitochondrion, or microtubule
This feature is in contrast to the ER, which has soluble proteins and enzymes in its lumen.

Nephron

nephronsrenal tubulerenal tubules
The interior of renal tubules and urinary collecting ducts
The capsule and tubule are connected and are composed of epithelial cells with a lumen.

Artery

arteriesarterialarterial system
The interior of a vessel, such as the central space in an artery or vein through which blood flows.
The hollow internal cavity in which the blood flows is called the lumen.

Gastrointestinal tract

intestinegastrointestinaldigestive tract
The interior of the gastrointestinal tract
The mucosa surrounds the lumen, or open space within the tube.

Bronchus

bronchibronchialbronchial tubes
The pathways of the bronchi in the lungs
The main bronchi have relatively large lumens that are lined by respiratory epithelium.

Vagina

birth canalvaginalvaginas
The pathways of the female genital tract, starting with a single pathway of the vagina, splitting up in two lumina in the uterus, both of which continue through the fallopian tubes Natural orifice transluminal endoscopic surgery in the lumina of, for example the stomach, vagina, bladder, or colon
Where the vaginal lumen surrounds the cervix of the uterus, it is divided into four continuous regions (vaginal fornices); these are the anterior, posterior, right lateral, and left lateral fornices.

Endoplasmic reticulum

rough endoplasmic reticulumERsmooth endoplasmic reticulum
*thylakoid, endoplasmic reticulum, Golgi apparatus, lysosome, mitochondrion, or microtubule
The UPR is activated in response to an accumulation of unfolded or misfolded proteins in the lumen of the endoplasmic reticulum.

Hemodynamics

blood flowhemodynamichaemodynamic
The interior of a vessel, such as the central space in an artery or vein through which blood flows.
Regardless of site, blood pressure is related to the wall tension of the vessel according to the Young–Laplace equation (assuming that the thickness of the vessel wall is very small as compared to the diameter of the lumen):

Female reproductive system

genital tractfemale reproductive tractfemale genital organs
The pathways of the female genital tract, starting with a single pathway of the vagina, splitting up in two lumina in the uterus, both of which continue through the fallopian tubes
The reproductive tract (or genital tract) is the lumen that starts as a single pathway through the vagina, splitting up into two lumens in the uterus, both of which continue through the Fallopian tubes, and ending at the distal ostia that open into the abdominal cavity.

Thylakoid

thylakoid membranethylakoid membranesgrana
*thylakoid, endoplasmic reticulum, Golgi apparatus, lysosome, mitochondrion, or microtubule
Thylakoids consist of a thylakoid membrane surrounding a thylakoid lumen. Chloroplast thylakoids frequently form stacks of disks referred to as grana (singular: granum). Grana are connected by intergranal or stroma thylakoids, which join granum stacks together as a single functional compartment.

Large intestine

coloncolorectallarge bowel
Natural orifice transluminal endoscopic surgery in the lumina of, for example the stomach, vagina, bladder, or colon
The colon crypts are shaped like microscopic thick walled test tubes with a central hole down the length of the tube (the crypt lumen).

Biology

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

Cell biology

cytologycell biologistcellular biology
In cell biology, a lumen is a membrane-defined space that is found inside several organelles, cellular components, or structures:

Organelle

organellescell organellescell organelle
In cell biology, a lumen is a membrane-defined space that is found inside several organelles, cellular components, or structures:

Cellular component

biological componentbiological componentscellular components
In cell biology, a lumen is a membrane-defined space that is found inside several organelles, cellular components, or structures:

Mitochondrion

mitochondriamitochondrialmitochondrial membrane
*thylakoid, endoplasmic reticulum, Golgi apparatus, lysosome, mitochondrion, or microtubule

Microtubule

microtubulesmicrotubularmicrotubule polymerization
*thylakoid, endoplasmic reticulum, Golgi apparatus, lysosome, mitochondrion, or microtubule

Vein

veinsvenousvenous system
The interior of a vessel, such as the central space in an artery or vein through which blood flows.

Lung

lungspulmonaryright lung
The pathways of the bronchi in the lungs

Collecting duct system

collecting ductcortical collecting ductcollecting ducts
The interior of renal tubules and urinary collecting ducts

Uterus

wombuterineuteri
The pathways of the female genital tract, starting with a single pathway of the vagina, splitting up in two lumina in the uterus, both of which continue through the fallopian tubes

Fallopian tube

fallopian tubesuterine tubeIsthmus of fallopian tube
The pathways of the female genital tract, starting with a single pathway of the vagina, splitting up in two lumina in the uterus, both of which continue through the fallopian tubes

Natural orifice transluminal endoscopic surgery

NOTESnatural orifice translumenal endoscopic surgerytransoral thyroidectomy
Natural orifice transluminal endoscopic surgery in the lumina of, for example the stomach, vagina, bladder, or colon

Stomach

gastricfunduscardia
Natural orifice transluminal endoscopic surgery in the lumina of, for example the stomach, vagina, bladder, or colon