The anterior facial vein
usually unites with the posterior facial vein
to form the common facial vein
, which crosses the external carotid artery
and enters the internal jugular vein
at a variable point below the hyoid bone
From near its termination a communicating branch often runs down the anterior border of the Sternocleidomastoideus to join the lower part of the anterior jugular vein.
The common facial vein is not present in all individuals.