Head and neck anatomy may be important in the development of the BBB. Astrocytes may also be responsible for transporting ions (electrolytes) from the brain to the blood. Blood from the brain and neck flows from: (1) within the cranium via the internal jugular veins, a continuation of the sigmoid sinuses. The right and left external jugular veins drain from the parotid glands, facial muscles, scalp into the subclavian veins. The right and left vertebral veins drain the vertebrae and muscles into the right subclavian vein and into the superior vena cava, into the right atrium of the heart. The lymphatic system drains the
The Blood Book of "Immanuel's Veins", as it contains both new and different content than what was mentioned in "Immanuel's Veins", and is missing certain other details. A man whom Toma called Saint Thomas the Beast Hunter is implied to be the one who penned Toma's Blood Book. Ba'al's Blood Book was also mentioned briefly in Dekker's novel "Green", as it was compiled only about a year before "Green" took place. "The Blood Book" was first rumored by Dekker on his old forums sometime in 2008, before the release of "Green". There he spoke of a pair of journals, known as the "Blood