ear structures Flashcards
external ear function
hearing only
middle ear function
hearing only
inner ear function
equilibrium and hearing
which part(s) of the ear involve hearing
external ear, middle ear, inner ear
which part(s) of the ear involve only hearing
external ear, middle ear
which part(s) of the ear involve equilibrium
inner ear
pinna structure
elastic cartilage covered in skin
pinna function
collects and directs sound waves into the external acoustic meatus
elastic cartilage covered in skin
pinna
collects and directs sound waves into the external acoustic meatus
pinna
external acoustic meatus structure
short, narrow canal carved into the temporal bone; lined with ceruminous glands
external acoustic meatus function
transmits sound waves from the pinna to the tympanic membrane
short, narrow canal carved into the temporal bone; lined with ceruminous glands
external acoustic meatus
transmits sound waves from the pinna to the tympanic membrane
external acoustic meatus
tympanic membrane structure
thin membrane that separates the external ear from the middle ear
tympanic membrane function
vibrates at exactly the same frequency as the sound waves hitting it and transmits vibrations to the auditory ossicles
thin membrane that separates the external ear from the middle ear
tympanic membrane
vibrates at exactly the same frequency as the sound waves hitting it and transmits vibrations to the auditory ossicles
tympanic membrane
malleus structure
tiny bone shaped like a hammer; its handle is attached to the eardrum
malleus function
transmits and amplifies vibrations from the tympanic membrane to the incus
tiny bone shaped like a hammer; its handle is attached to the eardrum
malleus
transmits and amplifies vibrations
malleus
incus structure
tiny bone shaped like an anvil that articulates with the malleus and the stapes
incus function
transmits and amplifies vibrations from the malleus to the stapes
tiny bone shaped like an anvil that articulates with the malleus and the stapes
incus
transmits and amplifies vibrations from the malleus to the stapes
incus
stapes structure
tiny bone shaped like a stirrup; its base fits into the oval window
stapes function
transmits and amplifies vibrations from the incus to the oval window
tiny bone shaped like a stirrup; its base fits into the oval window
stapes
transmits and amplifies vibrations from the incus to the oval window
stapes
oval window structure
oval-shaped membrane located deep to the stapes
oval window function
transmits vibrations from the stapes to the perilymph of the scala vestibuli
oval shaped membrane located deep to the stapes
oval window
transmits vibrations from the stapes to the perilymph of the scala vestibuli
oval window
auditory tube structure
a tube that connects the middle ear to the superior portion of the pharynx
auditory tube function
equalizes the pressure in the middle ear cavity with the external air pressure so that the tympanic membrane can vibrate properly
a tube that connects the middle ear to the superior portion of the pharynx
auditory tube
equalizes the pressure in the middle ear cavity with the external air pressure so that the tympanic membrane can vibrate properly
auditory tube
