According to standard anatomical textbooks, the external jugular vein (EJV) is chiefly responsible for draining the scalp and face and is formed by the union of the posterior division of the retromandibular vein and posterior auricular vein
near mandibular angle (Standring et al., 2012; Sinnatamby, 2011).
External jugular vein formed by the union of posterior division of the retromandibular vein and the posterior auricular vein, begins at the angle of the mandible and descends obliquely, superficial to the sternocleidomastoid muscle to drain into the subclavian vein.
The external jugular vein is formed by the posterior division of the retromandibular vein and the posterior auricular vein. The main trunk of the external jugular vein descends superficial to the sternocleidomastoid muscle and drained into the subclavian vein.
While the posterior division unites with posterior auricular vein
to form external jugular vein that drains into subclavian vein.
As per the standard description EJV begins in the substance of the parotid gland by the union of posterior division of RMV (posterior facial) and the posterior auricular veins
or by a single one or some combination of these and the facial, maxillary or other veins near the mandibular angle (Hollinshead,1968).