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Anatomy of the cranial base
Anatomy of the external and middle ear
Anatomy of the eye
Anatomy of the infratemporal fossa
Anatomy of the inner ear
Anatomy of the nose and paranasal sinuses
Anatomy of the oral cavity
Anatomy of the orbit
Anatomy of the pterygopalatine (sphenopalatine) fossa
Anatomy of the salivary glands
Anatomy of the temporomandibular joint and muscles of mastication
Anatomy of the tongue
Bones of the cranium
Muscles of the face and scalp
Nerves and vessels of the face and scalp
Anatomy of the inner ear
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How is it you can listen to your favorite song, close your eyes, dance, and not fall on your face? Well, there is a little thing called the inner ear that contains the vestibulocochlear organ which gives you the ability to perceive sounds and maintain your balance.
The inner ear is found in the petrous part of the temporal bone between the middle ear laterally, and the internal acoustic meatus medially. It is a small and important area which houses the irregularly shaped vestibulocochlear organ, which kind of looks like a snail shell attached to a few bony rings.
Now, the inner ear contains the bony labyrinth and the membranous labyrinth. The bony labyrinth is connected to the middle ear by two windows. The oval window is found on the lateral wall of the vestibule and is covered by the base of the stapes, while the round window is found at the base of the cochlea and is covered by the secondary tympanic membrane.
The bony labyrinth, within the otic capsule, is filled with perilymph and is made of a series of cavities which are the vestibule, the semicircular canals, and the cochlea. Suspended within the bony labyrinth, there’s the membranous labyrinth, which is basically a series of sacs and ducts filled with endolymph.
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