The book (also called the libretto) is the least appreciated and yet most dramatically important element of a musical. It is the narrative structure that keeps the score from being nothing more than a disjointed medley of songs.
Another term for the eardrum is the tympanic membrane, which is the scientific term for the eardrum. The tympanic membrane is a circular layer of tissue that separates the outer ear from the middle ear. It is incredibly thin and only measures roughly 0.1 millimeter thick. Continue Reading.
A perforated eardrum is when the thin membrane, called the tympanic membrane or eardrum, that separates the middle ear from the outer ear has a hole or tear in it. There are a number of possible causes, including: An infection in the middle ear.