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The superior thyroid artery is typically the first branch of the external carotid artery. Most of its flow directed into the thyroid bed, with a characteristic thyroid blush on catheter angiography.It is very often seen on a (well-performed) CTA.A superior laryngeal branch often arises from the superior thyroid artery.Penetrating the thyrohyopid membrane along with the superior laryngeal nerve of the vagus nerve, it supplies stuctures of the larynx and hypopharynx.ost of its flow directed into the thyroid bed, with a characteristic thyroid blush on catheter angiography. It is very often seen on a (well-performed) CTA. A superior laryngeal branch often arises from the superior thyroid artery.
The external carotid artery supplies the areas of the head and neck external to the cranium. 1  After arising from the common carotid artery, it travels up the neck, posterior to the mandibular neck and anterior to the lobule of the ear. The artery ends within the parotid gland, by dividing into the superficial temporal artery and the maxillary artery. Before terminating, the external carotid artery gives off six branches: