Ear Flashcards
What separates the external ear from the middle ear?
Tympanic membrane
What are the three parts of the ear?
External, middle, and internal
What joins the middle ear to the nasopharynx?
Pharyngotympanic (auditory) tube
What are the two parts of the external ear?
Auricle and external acoustic meatus
What are the two parts of the middle ear?
Tympanic cavity proper and the epitympanic recess
What are the contents of the middle ear?
Auditory ossicles: malleus, incus, and stapes
Stapedius and tensor tympani muscles
Chorda tympani nerve (CN VII)
Tympanic nerve plexus
What are the three auditory ossicles?
Malleus, incus, and stapes
What are the two muscles that resist movements of the auditory ossicles?
Tensor tympani and the stapedius
What comprises the internal ear?
Vestibulocochlear organ and sacs and ducts of the membranous labryinth suspended within the bony labyrinth
What is the auricle comprised of?
Elastic cartilage
What are the two divisions of the membranous labyrinth?
Vestibular labyrinth and cochlear labyrinth
What are the three parts of the membranous labyrinth?
Vestibular labyrinth, three semicircular ducts, and cochlear labyrinth
What are the three parts of the bony labyrinth?
Cochlea , vestibule, and semicircular canal
