Final answer:
The external jugular veins are responsible for draining blood from the head, scalp, and cranial regions and leading to the subclavian vein.
Step-by-step explanation:
The veins that drain blood from the head, scalp, and cranial regions and lead to the subclavian vein are the external jugular veins. These veins receive blood from the more superficial parts of the head, including the temporal vein and maxillary vein. They ultimately empty into the subclavian vein, which is an important pathway for venous drainage from the head.