| biconcave | Concave on both sides; as, biconcave vertebrae. Source: Websters Dictionary (01 Mar 1998) |
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| biconcave lens | A lens that is concave on two opposing surfaces. Synonym: concavoconcave lens, double concave lens. (05 Mar 2000) |
| anterior tubercle of cervical vertebrae | The anterior projection from the transverse process. Synonym: tuberculum anterius vertebrarum cervicalium. (05 Mar 2000) |
| arcus vertebrae | The posterior projection from the body of a vertebra that encloses the vertebral foramen; it consists of paired pedicles and laminae; the spinous, transverse, and articular processes arise from the arch. In aggregate, the venous arches-and the ligamenta flava that unite them-form the posterior wall of the vertebral (spinal) canal. Synonym: arcus vertebrae, neural arch. (05 Mar 2000) |
| block vertebrae | Congenitally fused and hypoplastic vertebral bodies which, on radiographs, give the appearance of a more or less solid bony mass. See: Klippel-Feil syndrome. (05 Mar 2000) |
| bullet shaped vertebrae | <radiology> Differential diagnosis: Morquio disease, achondroplasia, Hurler disease (12 Dec 1998) |
| radix arcus vertebrae | The constricted portion of the arch on either side extending from the body to the lamina; bound intervertebral foramina superiorly and inferiorly. Synonym: pediculus arcus vertebrae, radix arcus vertebrae. (05 Mar 2000) |
| vertebrae | <anatomy> One of 23 bones (excluding the sacrum) in the cervical, thoracic and lumbar regions that comprise the spine. There are 7 cervical vertebrae, 12 thoracic and 5 lumbar vertebrae. The bottom of the spine is fused and forms the sacrum. (27 Sep 1997) |
| vertebrae cervicales | The seven segments of the vertebral column located in the neck. Synonym: vertebrae cervicales. (05 Mar 2000) |
| vertebrae coccygeae | The four terminal segments of the vertebral column, usually fused to form the coccyx. Synonym: vertebrae coccygeae, tail vertebrae. (05 Mar 2000) |
| vertebrae lumbales | The vertebrae, usually five in number, located in the lumbar region of the back. Synonym: vertebrae lumbales. (05 Mar 2000) |
| vertebrae sacrales | The segments of the vertebral column, usually five in number, that fuse to form the sacrum. Synonym: vertebrae sacrales. (05 Mar 2000) |
| vertebrae spuriae | <anatomy> The fused vertebral segments of the sacrum and coccyx. Synonym: vertebrae spuriae. (05 Mar 2000) |
| vertebrae thoracicae | The segments of the vertebral column, usually twelve, which articulate with ribs to form part of the thoracic cage. Synonym: vertebrae thoracicae. (05 Mar 2000) |
| caudal vertebrae | The vertebrae that form the skeleton of the tail. (05 Mar 2000) |