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 includes: 1  auricle (cartilage covered by skin placed on opposite sides of the head). 2  auditory canal (also called the ear canal). 3  eardrum outer layer (also called the tympanic membrane).