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  • posterior auricu
  • It is relatively superficial at its start, where it is contained in the carotid triangle of the neck, and lies behind and medial to the external carotid, overlapped by the sternocleidomastoid muscle, and covered by the deep fascia, the platysma, and integument: it then passes beneath the parotid gland, being crossed by the hypoglossal nerve, the digastric muscle and the stylohyoid muscle, the occipital artery and the posterior auricular artery. (wikipedia.org)
  • cervical segment
  • The segments of the internal carotid artery are as follows: Cervical segment, or C1, identical to the commonly used Cervical portion Petrous segment, or C2 Lacerum segment, or C3 C2 and C3 compose the commonly termed Petrous portion Cavernous segment, or C4, almost identical to the commonly used Cavernous portion Clinoid segment, or C5. (wikipedia.org)