Fig. (1) Schematic diagram of the carotid triangle of the neck illustrating the normal course of carotid arteries and origin of superior thyroid artery (STA). Note that the superior thyroid artery (STA) is arising from the external carotid artery (ECA) and superior laryngeal artery (SLA) is a branch of superior thyroid artery (STA). (CCA- Common carotid artery, ICA- Internal carotid artery, TG- Thyroid gland, SCM- Sternocleidomastoid, PDPosterior belly of digastric, ILN- Internal laryngeal nerve).