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The cervical spinal nerve 7 (C7) is a spinal nerve of the cervical segment. [1] It originates from the spinal column from above the cervical vertebra 7 (C7). It runs through the interspace between the C6 and C7 vertebrae.
The thoracic spinal nerve 1 (T1) is a spinal nerve of the thoracic segment. [ 1 ] It originates from the spinal column from below the thoracic vertebra 1 (T1).
This is true for all spinal nerves except for the first spinal nerve pair (C1), which emerges between the occipital bone and the atlas (the first vertebra). [3] Thus the cervical nerves are numbered by the vertebra below, except spinal nerve C8, which exists below vertebra C7 and above vertebra T1.
A significant correlation was found between decreased mobility in motion segment C7-T1 and T1-T2 and increased risk for neck- shoulder pain. [ 1 ] [ 4 ] Norlander and Nordgren [ 5 ] have also shown that several clinical symptoms show relationship to segmental mobility examined with CTR.
The last four cervical spinal nerves, C5 through C8, and the first thoracic spinal nerve, T1, combine to form the brachial plexus, or plexus brachialis, a tangled array of nerves, splitting, combining and recombining, to form the nerves that subserve the upper-limb and upper back. Although the brachial plexus may appear tangled, it is highly ...
The four main divisions of the spinal column, from top to bottom: cervical, thoracic, lumbar, and sacral. The lateral grey column (lateral column, lateral cornu, lateral horn of spinal cord, intermediolateral column) is one of the three grey columns of the spinal cord (which give the shape of a butterfly); the others being the anterior and posterior grey columns.
CT gives greater detail than X-rays, but exposes the patient to more radiation, [91] and it still does not give images of the spinal cord or ligaments; MRI shows body structures in the greatest detail. [10] Thus it is the standard for anyone who has neurological deficits found in SCI or is thought to have an unstable spinal column injury. [92]
The intercostal nerves are part of the somatic nervous system, and arise from the anterior rami of the thoracic spinal nerves from T1 to T11. [1] [2] The intercostal nerves are distributed chiefly to the thoracic pleura and abdominal peritoneum, and differ from the anterior rami of the other spinal nerves in that each pursues an independent course without plexus formation.