DIVIDED FORAMEN TRANSVERSARIUM
| Autor: | Ravi Shankar P, Suba Ananthi K, Reena Agrawal |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Journal of Evolution of Medical and Dental sciences. 2:10267-10269 |
| ISSN: | 2278-4802 2278-4748 |
| DOI: | 10.14260/jemds/1764 |
| Popis: | INTRODUCTION: The cervical vertebrae are seven in number. They are the smallest of the vertebrae and can be identified by the presence of a foramen in each transverse process. The dorsal and ventral roots terminate laterally as dorsal and ventral tubercles. The roots are connected lateral to the foramen by an intertubercular lamella. The vertebral artery which arises from the superoposterior aspect of the first part of the subclavian artery, passes through the foramina in the transverse processes of all of the cervical vertebrae except the seventh. It then curves medially behind the lateral mass of the atlas and enters the cranium through the foramen magnum 1 . The vertebral vein begins in suboccipital venous plexus and descends in foramen transversarium (FT). At the lower end the plexus unites into a single vein, which lies in front of the vertebral artery and terminates into the posterior surface of the first part of Brachiocephalic vein, or lower end of internal jugular vein2. Thus FT transmits the second part of vertebral artery with its accompanying veins and a sympathetic plexus from the lower cervical ganglion. The seventh foramen transmits a vein and a grey ramus from the lower ganglion running up to join the seventh nerve. The ganglion is situated beside the vertebral artery below the level of the seventh costal process, so that its filament to the eighth nerve reaches it directly, but that for the seventh must ascend through the foramen3. MATERIALS AND METHODS: During inspection of 72 cervical vertebrae housed in the Department of Anatomy, Meenakshi Medical College and Research Institute, divided foramen transversarium was noticed in four vertebrae, which were photographed. The length of bony bars and the diameters of the foramina were measured by digital vernier caliper. |
| Databáze: | OpenAIRE |
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