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 small, thin membrane that is positioned between the external auditory canal and the middle ear. The eardrum is made up of three tissue layers. As sound waves travel through the ear canal and strike the eardrum, they cause the eardrum to vibrate.