The cervical spine comprises the first seven vertebrae below the skull. C3 is the third vertebra of the cervical spine, and is at approximately the same level of the lower jaw and the hyoid bone.
Although you may be unfamiliar with the C3 vertebra it plays an important part in your life. The nerve reaching out from C3 controls muscle movement in the face and neck. Problems with this vertebra can affect the cheeks, outer ear, bones in the face, teeth, and the trifacial nerve (or
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