Vertebra
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 disks or short cylinders, but in the higher vertebrates they are composed of many parts, and the vertebr[ae] in different portions of the same column vary very greatly. A well-developed vertebra usually consists of a more or less cylindrical and solid body, or centrum, which is surmounted dorsally by an arch, leaving an opening which forms a part of the canal containing the spinal cord. From this dorsal, or neural, arch spring various processes, or apophyses, which have received special names: a dorsal, or neural, spine, spinous process, or neurapophysis, on the middle of the arch; two anterior and two posterior articular processes, or zygapophyses; and one or two transverse processes on each side. In those vertebr[ae] which bear well-developed ribs, a tubercle near the end of the rib articulates at a tubercular facet on the transverse process (diapophysis), while the end, or head, of the rib articulates at a more ventral capitular facet which is sometimes developed into a second, or ventral, transverse process (parapophysis). In vertebrates with well-developed hind limbs, the spinal column is divided into five regions in each of which the vertebr[ae] are specially designated: those vertebr[ae] in front of, or anterior to, the first vertebra which bears ribs connected with the sternum are cervical; all those which bear ribs and are back of the cervicals are dorsal; the one or more directly supporting the pelvis are sacral and form the sacrum; those between the sacral and dorsal are lumbar; and all those back of the sacral are caudal, or coccygeal. In man there are seven cervical vertebr[ae], twelve dorsal, five lumbar, five sacral, and usually four, but sometimes five and rarely three, coccygeal. [1913 Webster]

2. (Zo["o]l.) One of the central ossicles in each joint of the arms of an ophiuran. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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 — 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 — (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

  • Vertebra — Vertebra, lat., Wirbel, Rückenwirbel; Vertebralsystem, das Rückenmark mit allen seinen Nerven; V.ta, (animalia), Thiere mit Rückenwirbeln …   Herders Conversations-Lexikon

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