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Superior Thyroid Artery

Superior Thyroid Artery • arises from the external carotid artery just below the level of the greater cornua of the hyoid bone. • runs downwards and forwards parallel and just superficial to the external laryngeal nerve. • passes deep to the three long infrahyoid muscles to reach the upper pole of the lateral lobe of the thyroid gland. • relationship to the external laryngeal nerve, which supplies the cricothyroid muscle is important to the surgeon during thyroid surgery. • The artery and nerve are close to each other higher up, but diverge slightly near the gland. • To avoid injury to the nerve, the superior thyroid artery is ligated as near the gland as possible • Apart from its terminal branches to the thyroid gland, it gives one important branch, the superior laryngeal artery which pierces the thyrohyoid membrane in company with the internal laryngeal nerve • The superior thyroid artery also gives a sternocleidomastoid branch to that muscle and a cricothyroid branch that anastomoses with the artery of the opposite side in front of the cricovocal membrane. --------------------------------------------------------------------------------------------------------------- My website - https://human-anatomy-lessons.busines... My Blog - https://human-anatomylessons.blogspot... ---------------------------------------------------------------------------------------------------------------- Follow me in blogspot - https://human-anatomylessons.blogspot... _________________________________________________________________________________________________________________ Visit my blogs - https://humananatomyonline.in/ Contact me @ https://t.me/humananatomylessons