Difference in draining of Anterior Retromandibular V. and Posterior Retomandibular V. (Hint: Jugular)
Anterior Division of The Retromandibular - joins Facial V. to form Common Facial V. and drain to the INTERNAL Jugular Vein
Posterior Division of The Retromandibular - joins with Posterior Auricular V. to drain to EXTERNAL Jugular Vein
Superficial Temporal V. + Maxillary V. =
Retromandibular V.