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.
It is called an eardrum because it looks and acts like a drum. The eardrum receives vibrations from the outer ear and transmits them to the small hearing bones (ossicles), of the middle ear. Because it is so thin, the eardrum can be ruptured or punctured.