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 outer ear refers to the ear canal that is approximately one inch in length and ends at the level of the eardrum (known as the tympanic membrane). The eardrum identifies the beginning of the middle ear, which is a cavity in the bone of the skull that houses the three bones of hearing (known as ossicles).