<prompt> Inferior thyroid vein drains into -Internal jugular veinSuperior vena cavaBrachiocephalic veinExternal jugular vein  <response>: Venous drainage of the thyroid:-Superior thyroid vein - Drains into an Internal jugular vein.Middle thyroid vein - Drains into the internal jugular vein.Inferior thyroid vein - Drains into a Left brachiocephalic vein.Fourth thyroid vein of Kocher - Drains into the internal jugular vein. 