Recurrent laryngeal nerve is in close association with?
Ans. is (b) i.e. Inferior thyroid aery Inferior thyroid aery is a branch of the thyrocervical trunk. During its course it passes behind the carotid sheath and the middle cervical sympathetic ganglion and its terminal pa is related to the recurrent laryngeal nerve. More Questions about aerial supply of the thyroid gland The thyroid gland in supplied by the following aeries i) Superior thyroid aery a branch of the external carotid aery lies in close association with the external laryngeal nerve. ii) Inferior thyroid aery a branch of the thyrocervical trunk (which arises from the subclan aery) its terminal pa is intimately related to the recurrent laryngeal nerve. Major supply of the parathyroid glands iii) Acessory thyroid aeries - arise from tracheal and esophageal aeries v) Thyroidea ima aery (or the lowest thyroid aery) - found in only about 3% of individuals - arises from the brachicephalic trunk or directly from the arch of aoa. During thyroidectomy the superior thyroid aery is ligated near to gland (to save the external laryngeal nerve); and the inferior thyroid aery is ligated away from the gland (to save the recurrent laryngeal nerve) Questions on venous drainage of thyroid gland The thyroid gland is drained by the following veins i) Superior thyroid vein. - Drains in the internal jugular vein or - the common facial vein ii) Middle thyroid vein - Also drains in the internal jugular vein iii) Inferior thyroid vein - Drains into the left brachiocephalis vein iv) A fouh thyroid vein (of Kocher), - may emerge between middle and inferior veins and - drains into the internal jugular vein
Superior thyroid aery
Inferior thyroid aery
Middle thyroid vein
Superior thyroid vein