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.
The eardrum is a thin membrane that separates the outer ear (ear canal) from the middle ear. Sound waves vibrate the eardrum. A perforation (hole) in the eardrum may occur as a result of infection, trauma (e.g. swab puncture, waterskiing injury, etc.), or other problems.