Stroma
The supportive framework of an organ (or gland or other structure). The stroma is usually composed of connective tissue. It is distinct from the parenchyma, which consists of the key functional elements of that same organ (or gland or other structure). The Greek word "stroma" means "anything spread out for sitting or lying upon," essentially a mat. The stroma in anatomy is thus the supporting tissue. The stroma of the thyroid gland is the connective tissue that supports the lobules and follicles of the thyroid gland.
* * *
1. The framework, usually of connective tissue, of an organ, gland, or other structure, as distinguished from the parenchyma or specific substance of the part. 2. Aqueous phase of chloroplasts; i.e., chloroplast matrix. 3. Archaic term for mitochondrial matrix. [G. s., bed]
- s. glandulae thyroideae SYN: s. of thyroid gland.
- s. iridis SYN: s. of iris.
- s. of iris the delicate vascular connective tissue that lies between the anterior surface of the iris and the pars iridica retinae. SYN: s. iridis.
- lymphatic s. the network of reticular fibers and associated reticular cells of lymphatic tissue.
- nerve s. the connective tissue supporting structures of peripheral nerve fibers, consisting of endoneurium, perineurium, and epineurium.
- s. ovarii SYN: s. of ovary.
- s. of ovary the fibrous tissue of the medulla of the ovary. SYN: s. ovarii.
- Rollet s. the colorless s. of the red blood cells.
- s. of thyroid gland the connective tissue that supports the lobules and follicles of the thyroid gland. SYN: s. glandulae thyroideae.
- s. of vitreous the delicate framework of the vitreous body embedded in or enclosing the vitrous humor. SYN: s. vitreum.
- s. vitreum SYN: s. of vitreous.

* * *

stro·ma 'strō-mə n, pl stro·ma·ta -mət-ə
1) the supporting framework of an animal organ typically consisting of connective tissue
2) the spongy protoplasmic framework of some cells (as a red blood cell)
stro·mal -məl adj

* * *

n.
the connective tissue basis of an organ, as opposed to the functional tissue (parenchyma). For example, the stroma of the erythrocytes is the spongy framework of protein strands within a red blood cell in which the blood pigment haemoglobin is packed; the stroma of the cornea is the transparent fibrous tissue making up the main body of the cornea.

* * *

stro·ma (stroґmə) pl. stroґmata [Gr. strōma anything laid out for lying or sitting upon] the matrix or supporting tissue of an organ, as distinguished from its parenchyma or functional element. stromal, stromatic adj

Medical dictionary. 2011.

Look at other dictionaries:

  • stroma — [ strɔma ] n. m. • 1846; gr. strôma « tapis, couverture » 1 ♦ Biol. Trame conjonctive d un tissu. Stroma choroïdien, iridien. Spécialt, Pathol. Tissu conjonctif constituant la charpente d une tumeur cancéreuse. 2 ♦ Bot. Mycélium massif des… …   Encyclopédie Universelle

  • Stroma — may refer to: *Stroma, Scotland, an island off the northern coast of Scotland *Stroma (animal tissue), the connective, functionally supportive framework of a biological cell, tissue, or organ *Stroma, the thick fluid found in between grana, which …   Wikipedia

  • stromă — STRÓMĂ, strome, s.f. (bot.) 1. Grup de lamele între care se găseşte clorofila unor plante. 2. Organ de rezistenţă al unor ciuperci, în care se află elementele de înmulţire. – Din fr. stroma. Trimis de LauraGellner, 13.09.2007. Sursa: DEX 98 … …   Dicționar Român

  • stroma — (n.) 1832, in anatomy, plural stromae, Modern Latin, from L. stroma bed covering, from Gk. stroma anything spread out for lying or sitting on (see STRUCTURE (Cf. structure)) …   Etymology dictionary

  • Stroma — Stro ma, n.; pl. {Stromata}. [L., a bed covering, Gr. ? a couch or bed.] 1. (Anat.) (a) The connective tissue or supporting framework of an organ; as, the stroma of the kidney. (b) The spongy, colorless framework of a red blood corpuscle or other …   The Collaborative International Dictionary of English

  • Stroma — ist die plasmatische Grundsubstanz im Innenraum von Chloroplasten und anderen Plastiden. in der Histologie das bindegewebige Stützgerüst eines Organs, siehe Interstitium (Anatomie). das den Fruchtkörper umgebende Hyphengeflecht mancher… …   Deutsch Wikipedia

  • Stroma [2] — Stroma, Insel im Pentlandfrith, zu der schottischen Grafschaft Caithneß gehörig; hat einige Einw., an der Nordküste den Strudel Swalchie of Stroma …   Pierer's Universal-Lexikon

  • Stroma —    STROMA, an island, in the parish of Canisbay, county of Caithness; containing 186 inhabitants. This island lies in the Pentland Frith, about three miles from the coast of Caithness, and is about a mile in length and half a mile in breadth. The …   A Topographical dictionary of Scotland

  • stroma — strȍma ž DEFINICIJA anat. osnovno potporno tkivo parenhimnih organa kroz koje ob. prolaze živci, krvne i limfne žile, usp. parenhim ETIMOLOGIJA grč. strȏma: madrac …   Hrvatski jezični portal

  • Stroma — statusas T sritis embriologija atitikmenys: lot. Stroma ryšiai: platesnis terminas – sėklidė siauresnis terminas – sėklidės pertvarėlės siauresnis terminas – sėklidės tarpusienis siauresnis terminas – tarpaudininiai endokrinocitai …   Medicininės histologijos ir embriologijos vardynas

  • stroma — statusas T sritis embriologija atitikmenys: lot. Stroma ryšiai: platesnis terminas – sėklidė siauresnis terminas – sėklidės pertvarėlės siauresnis terminas – sėklidės tarpusienis siauresnis terminas – tarpaudininiai endokrinocitai …   Medicininės histologijos ir embriologijos vardynas

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”