"The seventh cervical vertebra, C7, also known as the vertebra prominens, shares similar characteristics of the like typical cervical vertebra C3-C6, but has some distinct features making it one of the atypical vertebrae. The name vertebra prominens arises from its long spinous process, which is easily palpable."
"C8 nerve, which does not have an associated cervical vertebra, exits in the C7-T1 vertebral foramen below C7"