The internal jugular, external jugular, and vertebral veins are the three pairs of veins that drain most of the blood from the head and neck. The vertebral veins drain from the cervical vertebrae, spinal cord, and neck muscles and terminate into the brachiocephalic vein. The external jugular veins drain from the superficial parts of the scalp and face, terminating into the subclavian veins. The internal jugular veins are the largest and drain blood from the head and neck region. They receive the majority of blood from the brain through numerous dural venous sinuses that exit the skull via the jugular foramina. For instance, the inferior sagittal sinus drains into the straight sinus, which, along with the superior sagittal sinus, empties into the transverse sinuses. These lead into the sigmoid sinuses, ultimately becoming the internal jugular veins as they exit the skull. The cavernous sinuses also join the internal jugular veins, collecting blood from the eyes, nose, and face. The internal jugular veins then join the subclavian vein, which continues further as the brachiocephalic veins.