Submental vein

The submental vein (Latin: vena submentalis) is a venous blood vessel that arises from the network in submental triangle.

Submental vein on it's course to join the facial vein

This vein originates from the submental triangle, turns laterally, passes over the submandibular gland and near the angle of the mandible drains into the facial vein.

The submental vein collects deoxygenated blood from the submandibular and sublingual glands, mylohyoid muscle, and skin in the submental area.