Noun
a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions
a cavity or passage in a tubular organ
Source: WordNetthe lumen of the intestine Source: Internet
ADH causes a reabsorption of water from the lumen of the nephron to the extracellular fluid osmotically. Source: Internet
American Heart Association, 2015 With the existing plaque, instead of being smooth and elastic, the layers become thickened and irregular and the lumen of the artery become narrower. Source: Internet
All posterior midgut activity is restricted to the posterior midgut lumen. Source: Internet
Cells in the digestive gland directly release pigmented excretory chemicals into the lumen of the gut, which are then bound with mucus passed through the anus as long dark strings, ejected with the aid of exhaled water from the funnel. Source: Internet
A similar cycle of activity occurs in the posterior midgut and posterior midgut lumen, whereas aminopeptidase in the posterior midgut epithelium decreases in activity during digestion. Source: Internet