vertebra


vertebra
(plural vertebrae))
bony or cartilaginous elements surrounding the notochord or replacing it and often protecting the spinal cord and caudal vein. Vertebrae are composed of a centrum formed from two pleurocentra and two intercentra or parts of these elements, a neural arch formed by the interdorsal and basidorsal of each side, a neural spine fused to the neural arch, a haemal arch formed from the fusion of the interventral and basiventral, and a haemal spine fused to the haemal arch. Petromyzontidae lack centra and have a persistent notochord. Elasmobranchii have a centrum with a notochord core surrounded by a ring of cartilage (chordacentrum) to which the neural and haemal arches (arcocentra) attach and an outer ring of cartilage (autocentrum) interrupted by the arches. The cartilage becomes calcified (cyclospondylous, q.v., asterospondylous, q.v., tectospondylous, q.v.)

Dictionary of ichthyology. 2009.

Look at other dictionaries:

  • Vértebra — Vértebras cervicales Articulaciones Sínfisis vertebral Cifapofisaria Intertransversa Interespinosa Se denomina vértebra a cada uno de los huesos que conforman la columna vertebral …   Wikipedia Español

  • vertebră — VERTÉBRĂ, vertebre, s.f. Fiecare dintre oasele scurte, în formă de inel, care formează împreună coloana vertebrală la om şi la animalele vertebrate şi în care se află măduva spinării. – din fr. vertèbre, lat. vertebra. Trimis de the catalin,… …   Dicționar Român

  • vértebra — f. anat. Cada una de las piezas óseas articulares que constituyen la columna vertebral. Son huesos esponjosos y cortos en los que es posible diferenciar un cuerpo (en posición anterior) y diversas apófisis, tanto laterales como posteriores… …   Diccionario médico

  • Vértebra L3 — Saltar a navegación, búsqueda La vértebra L3 es un elemento de palanca muy potente en la estabilidad lumbar, que presenta en su parte anterior inserciones de los músculos psoas y diafragma, muy importantes en la terapia osteopatica, por sus… …   Wikipedia Español

  • vértebra — s. f. 1.  [Anatomia] Cada um dos ossos que formam a coluna vertebral. 2.  [Anatomia] vértebra cervical: cada uma das sete vértebras da parte superior da coluna. 3.  [Anatomia] vértebra dorsal: cada uma das doze vértebras situadas no meio das… …   Dicionário da Língua Portuguesa

  • Vertebra — Ver te*bra, n.; pl. {Vertebr[ae]}. [L. vertebra, fr. vertere to turn, change. See {Verse}.] [1913 Webster] 1. (Anat.) One of the serial segments of the spinal column. [1913 Webster] Note: In many fishes the vertebr[ae] are simple cartilaginous… …   The Collaborative International Dictionary of English

  • vertebra — (n.) 1610s, from L. vertebra joint or articulation of the body, joint of the spine (pl. vertebræ), perhaps from vertere to turn (see VERSUS (Cf. versus)) + instrumental suffix bra. The notion is of the spine as the hinge of the body …   Etymology dictionary

  • vértebra — (Del lat. vertĕbra). f. Anat. Cada uno de los huesos cortos, articulados entre sí, que forman el espinazo de los animales vertebrados …   Diccionario de la lengua española

  • vertebra — [vʉr′tə brə] n. pl. vertebrae [vʉr′təbrē΄, vʉr′təbrā΄] or vertebras [L, a joint, vertebra < vertere, to turn: see VERSE] any of the single bones or segments of the spinal column, articulating in the higher vertebrates with those adjacent to it …   English World dictionary

  • Vertĕbra — (lat.), Wirbel. Vertebrae colli, Halswirbel. V. dorsi, Brustwirbel. V. lumborum, Lendenwirbel. Daher Vertebral, zur Wirbelsäule gehörig. Vertebralarterie etc., s. Wirbelarterie etc. Vertebralloch, Vertebralnerven, s. Rückenmarksloch u.… …   Pierer's Universal-Lexikon

  • Vertĕbra — (lat.), Wirbel (s. d.); vertebral, zu den Wirbeln gehörig …   Meyers Großes Konversations-Lexikon


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