The Outer Ear
What is the function of the inner ear?
Hearing only
What sense does the middle ear house?
Hearing only
What senses does the inner ear house?
Hearing and Balance
What are the 2 senses the ear houses?
Hearing and balance.
Where does an action potential start?
In the cochlear nerve.
What is the external auditory canal?
A narrow chamber in the temporal lobe
What are the 3 bones of the tympanic cavity?
Malleus, Incus, Stapes
What are the 3 bony chambers?
The cochlea, vestibule, and semicircular canals.
What are the 3 areas the ear is divided into?
The outer ear, the middle ear, and the inner ear.
What is the mechanism of hearing?
Vibrations from sound waves move the tectorial membrane.
What kind of glands are present in the external auditory canal?
Ceruminous (wax) glands
How does the malleus move?
Vibrations from the eardrum
True or False: Inner ear is filled with perilymph.
True
What kind of receptors does the ear have?
What is the organ of hearing?
Organ of cortis
True or False: The external auditory canal does not end at the tympanic membrane.
False
What is the middle ear?
Air-filled cavity with the temporal bone.
What do the bony chambers look like?
A maze.
True or false: Different organs have receptors for the same sense.
False
What bends hair cells?
A gel-like tectorial membrane
What does the pinna do?
Collects sound waves and channels them.
How many tubes are associated with the middle ear?
Two tubes
What is the function of the cochlea?
Transforms the sound into a neural message.
True or false: Hearing and balance depend on specialized receptors called hair cells.
True
True or false: Cochlear nerve transmits impulses to the auditory cortex on the temporal lobe.
True