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What is Superior thyroid aery is related to? and explain in detail?
Superior thyroid aery is the first anterior branch of the external carotid aery.it runs downwards and forwards in intimate relation to the external laryngeal nerve.after giving branches to adjacent stuctures, it pierces the bpretracheal fascia to reach the upper pole of lobe where the nerve detes medically.at the upper pole the aery divides into anterior and posterior branches. The anterior branch descends on the anterior border of the lobe and cintinues along the upper border of the isthmus to anastomose with its fellow of the opposite side. Ref BDC volume:3 , 6th edition