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在解剖一具成年男尸时,发现左侧甲状腺上动脉起始异常.左颈总动脉从主动脉弓上壁发出,在颈部外侧上升.平甲状软骨上缘1.7cm处分为颈外动脉和颈内动脉.在颈总动脉距甲状软骨上缘下方2.1cm处发出甲状腺上动脉.向上呈弓形,再向下前,经肩胛舌骨肌上腹深面,到甲状腺侧叶上端分为前后两支.前支沿甲状腺侧叶的内侧下降,主要营养侧叶的前面,经过中发出一小支,沿甲状腺峡上缘向内与对侧同名支吻合.后支在甲状腺后缘下降.分布于腺体的内侧和外面,并与甲状腺下动脉吻合.另外还发出舌骨支,喉上动脉,环甲肌支,胸锁乳突肌动脉.右侧和其他部位未发现异常.
Anatomy of an adult male corpse, the left anterior thyroid artery was found to be abnormal.The left common carotid artery from the aortic arch issued on the outer wall of the rise.Plastic upper thyroid cartilage 1.7cm at the upper edge of the external carotid artery and the neck is divided into Arteries in the common carotid artery from the thyroid cartilage 2.1cm below the upper edge of the thyroid artery issued upward arched, and then down before, through the epiphysis musculus musculus abdomen deep to the top of the thyroid lateral lobe is divided into two before and after. The anterior branches descend along the medial side of the thyroid gland, and the front of the main vegetative side leaves a small branch passing through the upper edge of the thyroid gland. The posterior branch descends on the posterior margin of the thyroid gland Of the medial and lateral, and anastomosis with the thyroid artery.In addition, the hyoid branch, the artery of the larynx, the branch of the cricothyroid muscle and the sternocleidomastoid artery were found.No abnormalities were found on the right side and other sites.