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
Martian (The War of the Worlds) Martian (The War of the Worlds) Little about the Martians is definitive, the story being told by a first-person narrator. The Martians are described as octopus-like creatures: the "body" consisting of a disembodied head nearly across, having two eyes; a v-shaped, beak-like mouth; and two branches each of eight 'almost whip-like' tentacles, grouped around the mouth, referred to as the 'hands'. They reproduce asexually, by "budding" off from a parent. Internally, the Martians consist of a brain, lungs, heart, and blood vessels; they have no organs for digestion, and therefore sustain themselves on Earth by mechanically transfusing blood via pipettes