C1: Cervical segment

Begins in neck at carotid bifurcation where the [[common carotid artery]] divides into
[[internal carotid artery]] and [[external carotid artery]]. Travels in carotid sheath with IJV and vagal nerve, encircled with [[postganglionic sympathetic nerves]] (PGSN). C1 ends where the ICA enters carotid canal of petrous bone. No branches