MEDICAL PHYSIOLOGY

Detailed explanation-1: -The anterior jugular vein is a related vein that is formed from submandibular veins and can drain into the external jugular vein or the subclavian vein directly, with the latter being more common. [2] The external jugular vein most commonly drains into the subclavian vein near the middle third of the clavicle.

Detailed explanation-2: -It descends obliquely along the neck, superficial to the sternocleidomastoid muscle. Upon reaching the clavicle, it crosses the deep cervical fascia and ends by draining into the subclavian vein. The main function of the external jugular vein is to drain the superficial structures of the head, i.e. the scalp and face.

Detailed explanation-3: -The main ones draining these two regions are the: Facial vein. Inferior, middle, and superior thyroid veins. Vertebral veins.