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
The Heart Attack Chuckle. They stop the ambulance to fight outside. The driver beats the EMT bloody and leaves him in the street. While arguing with the passengers over this, he takes his eyes off the road, causing a crash. George and Jerry are put in neck braces and George has the tonsillectomy. Elaine visits briefly to give George some ice cream. The hospital television shows "The Flaming Globes of Sigmund" again, and Jerry remembers that what he wrote down was a line from the movie. As he realizes this, he notes "That's not funny." "The Heart Attack" was written by Larry Charles.