vertebra

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vertebra

one of the bony segments of the spinal column
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

vertebra

[′vərd·ə·brə]
(anatomy)
One of the bones that make up the spine in vertebrates.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Nevertheless, it is not possible to compare MG 8805 with Lourinhasaurus alenquerensis due to the absence of middle caudal vertebrae in the latter specimen (Lapparent and Zbyszewski, 1957; Mocho et al., 2014a).
where D1=the first discriminant score of an individual; od=orbit depth divided by HL; iou)=interorbital width divided by HL; pfi=pectoral-fin base depth divided by HL; pZ=pectoral fin length divided by HL; cpuZ=caudal peduncle ventral length divided by HL; p<iZ=predorsal length divided by HL; ppZ=prepectoral length divided by HL; gr=the number of gill rakers on the entire gill arch; llp=ihe number of lateral-line pores; dp=the number of dermal plicae; ap=the number of anal-fin pterygiophores anterior to the first haemal spine; pco=the number of precaudal vertebrae; and cu=the number of caudal vertebrae.
During the 5th and 6th week of gestation, the human embryo has a tail with 10-12 caudal vertebrae. This regresses by reduction in the number of vertebrae and fusion, leaving the vestigial coccyx.
Cranial articular processes of the Ca: to [Ca.sub.7] caudal vertebrae were present (Figures 3(b) and 3(c)).
The dogs might have several normal caudal vertebrae (tail bones) that are attached to the sacrum (the bone at the base of the spine), but the caudal vertebrae toward the tip of the tail are tiny, atrophied and crooked.
Rivulus was considered to be a monophyletic group based on the morphology of the shoulder girdle and the neural prezygapophyses of caudal vertebrae. A similar general phylogenetic hypothesis among rivulid lineages was obtained by Murphy & Collier (1997) using mitochondrial genes of seven rivulid species, but monophyly of Rivulus was not properly tested since only two species of Rivulus were included in the analysis.
In the first tetrapods, there was specialization of the anterior cervical vertebrae into a primitive atlas-axis complex, as well as a distinct split into a cervical trunk, sacral and caudal vertebrae, and interlocking vertebral centra with upright neural arches.
The Decision adopted differs from the Scientific Steering Committee's (SSC) 12 January Opinion and the political guidelines set by the 29 January Farm Council in that caudal vertebrae (the tail) will not be banned since they do not contain dorsal root ganglia (which scientists are convinced harbour the BSE prion).Removal of the vertebral column at the place of sale.Member States were granted a certain degree of flexibility to remove vertebral columns from the food chain at a point of their choosing before they reach the animal feed chain (as additives for compound feed) or the human food chain (in the form of gelatine or soup).
The index looks comprehensive (for example, there are 21 entries under "Caudal vertebrae"), and I found only a smattering of typographical errors.
The plethodontid vertebral column is divided into five regions, listed from anterior to posterior: a single cervical vertebra (distinguished by the interglenoid process and absence of ribs), trunk vertebrae (usually, all but the last one possess ribs); a single sacral vertebra (distinguished from the posterior most trunk vertebrae by the possession of sacral ribs); two to three caudosacral vertebrae; and caudal vertebrae (Wake 1966).