zona


zona
1. SYN: zone. 2. SYN: herpes zoster. [L. fr. G. zone, a girdle, one of the zones of the sphere]
- z. arcuata SYN: arcuate zone.
- z. ciliaris SYN: ciliary zone.
- z. corona SYN: costal fringe.
- z. dermatica a ridge of thickened skin surrounding the protrusion in spina bifida.
- z. epithelioserosa the membranous ring, within the z. dermatica, surrounding the protrusion in spina bifida.
- z. externa medullae renalis [TA] SYN: outer zone of renal medulla.
- z. fasciculata the layer of radially arranged cell cords in the cortical portion of the suprarenal gland, between the z. glomerulosa and z. reticularis; secretes cortisol and dehydroepiandrosterone.
- z. glomerulosa the outer layer of the cortex of the suprarenal gland just beneath the capsule; secretes aldosterone.
- z. hemorrhoidalis SYN: hemorrhoidal zone.
- zonae hypothalamicae [TA] SYN: zones of hypothalamus, under zone.
- z. incerta [TA] a flat, obliquely disposed plate of gray matter in the subthalamic region situated between the thalamic fasciculus (tegmental field H1 of Forel) and the lenticular fasciculus (tegmental field H2). Medially, cells of this nucleus are adjacent to the prerubral area (tegmental field H) and, laterally, they are continuous with the reticular nucleus of the thalamus. Z. i. is a derivative of the ventral thalamus; it receives afferents from the precentral motor cortex and the cerebellum.
- z. interna medullae renalis [TA] SYN: inner zone of renal medulla.
- z. lateralis [TA] SYN: lateral zone. See zones of hypothalamus, under zone.
- z. medialis [TA] SYN: medial zone. See zones of hypothalamus, under zone.
- z. medullovasculosa the fissured segment of the spinal cord that dorsally closes the sac in meningomyelocele.
- z. ophthalmica herpes zoster in the distribution of the ophthalmic nerve.
- z. orbicularis (articulationis coxae) [TA] fibers of the articular capsule of the hip joint encircling the neck of the femur. SYN: orbicular zone of hip joint, ring ligament, zonular band.
- z. pectinata SYN: pectinate zone.
- z. pellucida an extracellular coat, rich in glycoprotein, surrounding the oocyte; it contains microvilli of the oocyte and cellular processes of follicular cells and appears homogeneous and translucent under the light microscope. SYN: pellucid zone.
- z. perforata SYN: foramina nervosa, under foramen.
- z. periventricularis [TA] SYN: periventricular zone. See zones of hypothalamus, under zone.
- z. pupillaris SYN: pupillary zone.
- z. radiata SYN: z. striata.
- z. reticularis the inner layer of the cortex of the adrenal gland, where the cell cords anastomose in a netlike fashion.
- z. striata the thickened cell membrane of the ovum in forms, such as certain amphibia, in which it appears radially striated under the light microscope; with the electron microscope the striations can be seen to be microvilli. SYN: membrana striata, striated membrane, z. radiata.
- z. tecta SYN: arcuate zone.
- z. transitionalis analis [TA] SYN: anal transitional zone.
- z. vasculosa SYN: vascular zone.

* * *

zo·na 'zō-nə n, pl zo·nae -.nēalso -.nī or zonas
1) an anatomical zone or layer esp ZONA PELLUCIDA
2) SHINGLES

* * *

zo·na (zoґnə) gen. and pl. zoґnae [L. “a girdle”] 1. zone: an anatomical area with a specific boundary or characteristics. 2. herpes zoster.

Medical dictionary. 2011.

Look at other dictionaries:

  • zona — zona …   Dictionnaire des rimes

  • Zona — Classification et ressources externes Zona cervical. Notez les vésicules, typiques. CIM 10 …   Wikipédia en Français

  • zona — [ zona ] n. m. • 1799; mot lat. « ceinture », sens méd. en bas lat. ♦ Affection causée par un virus du groupe des herpès, caractérisée par une éruption de vésicules disposées sur le trajet de certains nerfs sensitifs. Zona intercostal,… …   Encyclopédie Universelle

  • zonă — ZÓNĂ, zone, s.f. 1. Fiecare dintre cele cinci mari diviziuni ale globului terestru, delimitate în funcţie de poli, de cercurile polare şi de tropice şi caracterizate printr o climă specifică. Zonă temperată. Zonă ecuatorială. ♦ (astron.) Fiecare… …   Dicționar Român

  • zona — / dzɔna/ s.f. [dal lat. zona cintura, fascia , gr. zṓnē, dal tema di zṓnnymi cingere ]. 1. [parte di superficie o di spazio delimitata: l alternarsi sul terreno di z. d ombra e di luce ; affresco con molte z. da restaurare ] ▶◀ area, fascia,… …   Enciclopedia Italiana

  • zona — (Del lat. zona, y este del gr. ζώνη, ceñidor, faja). 1. f. Lista o faja. 2. Extensión considerable de terreno que tiene forma de banda o franja. 3. Parte de terreno o de superficie encuadrada entre ciertos límites. 4. Extensión considerable de… …   Diccionario de la lengua española

  • zona — zóna ž DEFINICIJA 1. ograničen dio neke površine, prostora (teritorija) ili tijela [pješačka zona; tropska zona; erogena zona]; područje, pojas 2. područje administrativne podjele i dometa određenih zakona, propisa itd. prema drugom području gdje …   Hrvatski jezični portal

  • Zona — puede referirse a: Zona, un concepto usado en geografía, y por extensión en distintas ciencias. Contenido 1 Geografía 2 Geometría 3 Demografía …   Wikipedia Español

  • ZONA — (лат. zona пояс), слой или не ■больщой участок какой либо ткани, выделенный общностью гист. строения (однородные клетки, их расположение, направление волокон, их начало или окончание), общно ■стью иннервации (см. Геда зоны) или… …   Большая медицинская энциклопедия

  • zona — ZÓNA s.f. (În sintagma) Zona Zoster = boală infecţioasă virotică localizată în ganglionii spinali şi caracterizată prin dureri şi prin erupţii veziculare pe traiectul nervilor senzoriali. – Din fr. zona. Trimis de valeriu, 02.06.2003. Sursa: DEX… …   Dicționar Român

  • zona — |ô| s. f. 1. Porção da superfície da esfera compreendida entre dois paralelos. 2. Cada uma das cinco grandes divisões do globo terrestre determinadas pelos círculos polares e os trópicos. 3. Partes da esfera celeste. 4. Lista, banda, faixa, cinta …   Dicionário da Língua Portuguesa


Share the article and excerpts

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

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.