Cervical spinal nerves
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There are eight pairs of cervical spinal nerves.
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The first of these emerges through the intervertebral foramen of atlas, the second through the border of the arch of the axis and the eighth between the seventh cervical and the first dorsal vertebrae.
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First cervical
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The ventral branch passes out through the alar foramen of atlas, runs across the rectus capitis ventralis major divides near the thyroid gland into anterior and posterior branches.
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The former to supplies the omohyoideus and the latter joins a branch of the second cervical to supply the sternothyrohyoideus.
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Second cervical
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The dorsal branch supplies the muscles and the skin of the occipital region.
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The ventral branch supplies the rectus capitis ventralis major, sternothyrohyoideus and anastomotic branches to the spinal accessory nerve and ventral divisions of first and third cervical nerves.
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It also supplies a posterior auricular branch to skin on the convex face of external ear and a cutaneous branch to the parotid region.
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Third cervical
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Fourth cervical
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Fifth cervical
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Sixth cervical
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Similar to the preceding. In addition to supplying the lateral cervical group of muscles it gives a branch to the brachial plexus and another branch to form one of the roots of the phrenic nerve.
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Seventh cervical
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Eighth cervical
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Last modified: Sunday, 16 October 2011, 7:42 AM