Definition of Vertebra. Meaning of Vertebra. Synonyms of Vertebra

Here you will find one or more explanations in English for the word Vertebra. Also in the bottom left of the page several parts of wikipedia pages related to the word Vertebra and, of course, Vertebra synonyms and on the right images related to the word Vertebra.

Definition of Vertebra

Vertebra
Vertebra Ver"te*bra, n.; pl. Vertebr[ae]. [L. vertebra, fr. vertere to turn, change. See Verse.] 1. (Anat.) One of the serial segments of the spinal column. 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. 2. (Zo["o]l.) One of the central ossicles in each joint of the arms of an ophiuran.

Meaning of Vertebra from wikipedia

- In the vertebrate spinal column, each vertebra is an irregular bone with a complex structure composed of bone and some hyaline cartilage, the proportions...
- In tetrapods, cervical vertebrae (singular: vertebra) are the vertebrae of the neck, immediately below the skull. Truncal vertebrae (divided into thoracic...
- thoracic vertebra is larger than the first thoracic vertebra The thoracic spinal nerve 3 (T3) p****es out underneath it. The fourth thoracic vertebra, together...
- vertebrae. The fifth vertebra contains certain peculiarities, which are detailed below. As with other vertebrae, each lumbar vertebra consists of a vertebral...
- axis (second cervical vertebra) at the apex of the odontoid process or dens, and ends at the middle of the second thoracic vertebra; it is the least marked...
- A limbus vertebra is a bone tubercle formed by bone trauma on a vertebral body, bearing a radiographic similarity to a vertebral fracture. The anterior-superior...
- Vertebra may refer to: Vertebra, a bone in the spinal column of a vertebrate animal Vertebra (software), an environment for developing distributed software...
- sacroiliac joints. The upper part of the sacrum connects with the last lumbar vertebra (L5), and its lower part with the coccyx (tailbone) via the sacral and...
- In anatomy, the second cervical vertebra (C2) of the spine is named the axis (from Latin axis, "axle") or epistropheus. By the atlanto-axial joint, it...
- Spondylolisthesis is the displacement of one vertebra compared to another. While some medical dictionaries define spondylolisthesis specifically as the...
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