Arterial blood supply of thyroid gland

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The arterial blood supply of the thyroid gland is provided by two arteries - superior thyroid artery and inferior thyroid artery. Both are paired blood vessels, and they form an extremely rich vascular network that surrounds the gland. Moreover, each artery anastomoses with the same artery of the opposite side. The superior and inferior thyroid arteries originate from different blood vessels:

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