Final answer:
The jugular vein drains blood from the brain and superficial portions of the head, scalp, and cranial regions. It receives blood from the brain and the superficial facial vein, and then empties into the subclavian vein.
Step-by-step explanation:
The jugular vein is a major vein in the head and neck that drains blood from the brain and superficial portions of the head, scalp, and cranial regions.
It primarily receives blood from the brain and the superficial facial vein.
The jugular vein then empties into the subclavian vein, which is responsible for returning blood to the heart.