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.
A retracted eardrum is a condition whereby the eardrum is sucked or pulled into the area behind it. This may arise due to low pressure in middle ear area. The eardrum is a thin flexible membrane that separates middle ear from outer ear. It is called the tympanic membrane. Infections may also cause a retracted eardrum.