1. THE EAR

2. External Ear Pinna External auditory meatus

4. Middle Ear Malleus, Incus, Stapes Synovial Joints (between above bones) Tympanic membrane Round window Oval window Eustachian tube Nasopharynx

7. Inner Ear Semicircular canals Superior (frontal plane) Superior (frontal plane) Posterior (sagittal plane) Posterior (sagittal plane) Lateral (horizontal plane) Lateral (horizontal plane)Cochlea Vestibular nerve Choclear nerve

10. Ear Model Temporal bone (petrous ridge) Internal jugular vein Inner ear cavity Ampulla: lateral, superior, posterior UtricleSaccule

11. Pinna External acoustic meatus (the opening) External auditory canal Eustachian tube Internal Jugular vein

12. External acoustic meatus (the opening) Pinna External auditory canal Inner Ear Outer Ear Middle ear Eustachian tube

13. Ear Model Vestibular ganglion Bony cochlea Cochlear duct Scala vestibuli Organ of Corti Scala tympani

14. External acoustic meatus (the opening) External auditory canal Eustachian tube Semicircular canals: Posterior Superior Lateral Vestibulocochlear nerve

15. Cochlea Model Scala vestibuli Scala tympani Cochlear duct Vestibular membrane Basilar membrane Hair cells Tectoral membrane

16. Semicircular canals: Superior Posterior Lateral Utricle Saccule Cochlea Stapes Vestibulocochlear nerve

17. Vestibular nerve Cochlear nerve Vestibulocochlear nerve

18. Incus (anvil) Malleus (hammer) Stapes (stirrup) Semicircular canals Cochlea Vestibulocochlear nerve

19. Incus Malleus Tympanic membrane Cochlea Stapes Semicircular canals

20. Incus Malleus Stapes Semicircular canals Vestibulocochlear nerve Cochlea Utricle Saccule

22. Cross- section of cochlea Scala vestibuli scala media tectorial membrane hair cells scala tympani NOTE: the scala tympani is INFERIOR to the tectorial membrane; photos in some books may show this model upside down.

23. Cross-section of cochlea tectorial membrane hair cells

24. Ear Slide Basilar membrane Organ of Corti Tectorial membrane Scala tympani Scala vestibuli Cochlear duct Vestibular membrane Cochlear nerve fibers Spiral ganglion cells