What vein from the brain returns to heart?

The internal jugular vein is a major vein that returns blood from the brain and face to the heart. It is located on either side of the neck and is formed by the union of the sigmoid sinus and the inferior petrosal sinus at the base of the skull. The internal jugular vein then descends through the neck, passing through the carotid sheath along with the common carotid artery and vagus nerve. It terminates at the junction of the subclavian and internal jugular veins to form the brachiocephalic vein.

The internal jugular vein is responsible for returning oxygen-depleted blood from the brain to the heart. It also collects blood from the face, scalp, and neck. The internal jugular vein is a major pathway for the return of blood to the heart, and its obstruction can lead to serious complications, such as cerebral edema and increased intracranial pressure.