1 Scientists believe this powerful predator could eat up to 500 pounds (230 kilograms) of meat in one bite. 2  Fossils of T. rex prey, including Triceratops and Edmontosaurus, suggest T. rex crushed and broke bones as it ate, and bone fragments have been found in its dung.
Etiology. Infection is the principal cause of tympanic membrane perforation (TMP). Acute infection of the middle ear may cause a relative ischemia in the drum concurrent with increased pressure in the middle ear space.This leads to a tear or rupture of the eardrum that is usually preceded by severe pain. If the perforation does not heal, it leaves a residual tympanic membrane perforation (TMP).nfection is the principal cause of tympanic membrane perforation (TMP). Acute infection of the middle ear may cause a relative ischemia in the drum concurrent with increased pressure in the middle ear space.
On that inner side of the tympanic membrane is an air-filled space called the middle ear cavity. It contains the bones of hearing, two muscles, a number of ligaments, a small branch of the nerve of taste, and the opening of the Eustachian tube.he ossicles are suspended from the roof of the middle ear cavity by tiny ligaments, and the malleus is connected to the tympanic membrane by a ligament, as well. In addition, there are two muscles located in the middle ear space. One is called the stapedius.