Chp 13 Ear - Organs and Anatomic Structures of the Ear Flashcards
Ear
Organ of hearing and balance
External ear
Consists of the auricle and external auditory canal (meatus)
Auricle
External, visible part of the ear located on both sides of the head
External auditory canal
Short tube that ends at the tympanic membrane
Middle ear
Consists of the tympanic membrane and the tympanic cavity containing the ossicles
Tympanic membrane
Semitransparent membrane that separates the external auditory canal and the middle ear cavity
Ossicles
Bones of the middle ear that carry sound vibrations
Eustachian tube
Passage between the middle ear and the pharynx; equalizes air pressure on both sides of the tympanic membrane
Inner ear
Consists of the labyrinth and connectors of the vestibular and the cochlear nerves
Labyrinth
Bony spaces within the temporal bone of the skull made up of three distinct parts, the cochlea, and semicircular canals, and the vestibule