overlaps overlaps Homo sapiens internal jugular vein thyroid vein middle thyroid vein SCTID:303422002 Wikipedia:Middle_thyroid_vein UBERON:0034965 FMA:50823 The middle thyroid vein collects the blood from the lower part of the thyroid gland, and after being joined by some veins from the larynx and trachea, ends in the lower part of the internal jugular vein.