Lumen — can mean:* Lumen (unit), the SI unit of luminous flux * Lumen (anatomy), the cavity or channel within a tubular structure * Thylakoid lumen, the inner membrane space of the chloroplast * 141 Lumen, an asteroid discovered by the French astronomer… … Wikipedia
lumen — lu·men || luËmÉ™n n. unit for measuring the rate at which light is transmitted (Optics); cavity, hollow space (Anatomy, Botany) … English contemporary dictionary
lumen — lumen1 [ lu:mɛn] (abbrev.: lm) noun Physics the SI unit of luminous flux, equal to the amount of light emitted per second in a unit solid angle of one steradian from a uniform source of one candela. Origin C19: from L., lit. light . lumen2 [… … English new terms dictionary
lumen — /ˈlumən / (say loohmuhn) noun (plural lumens or lumina /ˈlumənə/ (say loohmuhnuh)) 1. Optics the derived SI unit of luminous flux; the light emitted in a unit solid angle of one steradian by a point source having a uniform intensity of one… …
Lens (anatomy) — Crystalline lens (anatomy) Light from a single point of a distant object and light from a single point of a near object being brought to a focus by changing the curvature of the lens … Wikipedia
Adventitia — Infobox Anatomy Name = PAGENAME Latin = GraySubject = GrayPage = Caption = Layers of Esophageal Wall: 1. Mucosa 2. Submucosa 3. Muscularis 4. Adventitia 5. Striated muscle 6. Striated and smooth 7. Smooth muscle 8. Lamina muscularis mucosae 9.… … Wikipedia
Inner space — may refer to:* Inner Space (album), a 1966 jazz music album by Chick Corea * Inner Space, A conference of closed circuit rebreather diving and CCR training held annually in the Grand Caymans. * University of Rhode Island, Inner Space Center *… … Wikipedia
endocrine system, human — ▪ anatomy Introduction group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… … Universalium
renal system — ▪ anatomy Introduction in humans (human body), organ system that includes the kidneys, where urine is produced, and the ureters, bladder, and urethra for the passage, storage, and voiding of urine. In many respects the human excretory, or… … Universalium
human cardiovascular system — ▪ anatomy Introduction organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes. It is a closed tubular system in which the… … Universalium
