Emissary veins passing through the foramen ovale, jugular foramen, foramen lacerum, and hypoglossal canal. Because the emissary veins are valveless, they are an important part in selective brain cooling through bidirectional flow of cooler blood from the evaporating surface of the head. In general, blood flow is from external to internal but the flow can be altered by increased intracranial pressure. A type of emissary vein goes through the sphenoidal emissary foramen inferior to the zygomatic arch with the cavernous sinus on the inside of the skull. This is an important route for spread of infection because cranial nerve VI and the
Who Are the Brain Police? interview, Zappa added: The song's structure was described in detail by AllMusic: The song was stated to be a "direct defiance of top 40 radio". Repetitive lyrics were noted as part of this "defiance". The song was also cited by Mojo magazine as "one of the scariest songs to ever emerge from the rock psyche". While comparing it to Kafka, "Mojo" described the song as "a vision of contemporary America where personal identity and individuality is erased". with: Who Are the Brain Police? "Who Are the Brain Police?" is a Frank Zappa song, performed by The Mothers of Invention, released