vertebra

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vertebra

one of the bony segments of the spinal column

vertebra

[′vərd·ə·brə]
(anatomy)
One of the bones that make up the spine in vertebrates.
References in periodicals archive ?
On the other hand, according to the relationships between the tail width and the caudal vertebra width, the thickness of the tail variation was caused by the soft tissue around the caudal vertebrae (Figs.
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.
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.
Rivulus was considered to be a monophyletic group based on the morphology of the shoulder girdle and the neural prezygapophyses of caudal vertebrae.
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).
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).
The increased dimensions are shown by pedicles at more caudal vertebrae.
a partial postcranial skeleton that comprises the neural arch of the axis and another four cervical vertebrae, one centrum and some fragments of neural arches of dorsal vertebrae, three vertebral centra and some fragments of neural spines of sacral vertebrae, nine anterior caudal vertebrae, cervical and dorsal rib fragments, five haemal arches, ossified tendon fragments, a proximal fragment of the right scapula and the incomplete left pelvic girdle represented by the anterior and dorsal part of the ilium, prepubis and a proximal fragment of the ischium (Figs.
8): precaudal vertebrae 11; caudal vertebrae (including terminal element) 16; vertebrae 3-11 with pleural rib articulating with respective parapophyses; twelve pairs of epineurals, articulating with vertebrae as follows: epineurals 1, 2 with corresponding parapophyses, 3-10 with corresponding pleural ribs, epineural 11 reduced and not articulating with pleural rib and 12 highly reduced and embedded in tissue; first caudal vertebra with expanded haemal arch and tiny haemal spine; haemal arch comprising elongate parapophyses, "rib-like" in appearance in lateral view; where parapophyses join ventrally to form haemal arch, a nubbin of bone (haemal spine) projecting posteriorly (Fig.
Among cats, the exceptions are the Manx and Bobtail cats that have no tails and have fewer caudal vertebrae than other felines.