Distinguish Between the Posterior Sacral Foramina and the Sacral Canal

Throughout the vertebral column the spinal cord travels through the vertebral canal made up by the foramina of all vertebrae. The thoracic spine is the second segment of the vertebral column located between the cervical and lumbar vertebrae.

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Spinal nerves exit the vertebral canal through the intervertebral foramina.

. It consists of twelve vertebrae which are separated by fibrocartilaginous intervertebral discs. Tarlov cysts are type II innervated meningeal cysts cerebrospinal-fluid-filled CSF sacs most frequently located in the spinal canal of the sacral region of the spinal cord S1S5 and much less often in the cervical thoracic or lumbar spineThey can be distinguished from other meningeal cysts by their nerve-fiber-filled walls. This is a bundle of lumbar sacral and coccygeal nerve roots.

Academiaedu is a platform for academics to share research papers. For example the 4th cervical nerve emerges. The cervical spinal nerves are named according to vertebra above which they emerge.

Thirty four pairs of spinal nerves 8 cervical 13 thoracic 6 lumbar 4 sacral and 3 coccygeal arise from the spinal cord. In some strains of mice there are 8 cervical 13 thoracic 7 lumbar 4 sacral and 2 coccygeal spinal nerves Sidman et al 1971. As part of the bony thorax the thoracic vertebrae help protect the internal viscera such as the heart lungs and oesophagus.

At around the level of L1 the spinal cord terminates and the cauda equina begins. Tarlov cysts are defined as cysts formed within.

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