The thyroid arteries are blood vessels that supply oxygenated blood to the thyroid gland, which is located in the neck. There are typically four main thyroid arteries: the superior thyroid artery, the inferior thyroid artery, and sometimes the thyroid ima artery. These arteries branch off from larger vessels, such as the carotid arteries and the subclavian artery. The superior thyroid artery primarily supplies the upper part of the thyroid gland, while the inferior thyroid artery supplies the lower part. The thyroid ima artery, when present, provides additional blood flow to the gland. Proper blood supply is essential for the thyroid gland to function effectively, producing hormones that regulate metabolism.