False about External Jugular vein
The posterior division of the retromandibular vein unites with the posterior auricular vein to form the external jugular vein which ultimately drains into the subclan vein.The external jugular vein crosses the sternocleidomastoid obliquely, running downwards and backwards from near the auricle to the clavicle.Reference: Chourasia; 6th edition; 86th page
It is deep to Platysma
Formed by anterior division of retromandibular vein and posterior auricular vein
It crosses Sternocleidomastoid
It drains into Subclan vein
Head and neck