Outter Ear
The bottom fatty portion of the pinna.
What is the Lobule?
The smallest bones in the body.
What are the ossicles?
The sensory receptors of the ear.
What are hair cells?
Bony shell that houses the inner ear.
What is the bony labrynth?
Area of the cortex which is responsible for processing auditory information.
What is the auditory cortex?
Cavity that leads into the External Auditory Canal.
What is the Concha?
Another name for the hammer.
What is the incus?
The portion of the membranous cochlear duct filled with endolymph.
What is the scalia media?
Oval shaped chamber which contains the utricle and saccule.
What is the vestibule?
The nerve which transmits auditory and vestibular information to the CANS.
What is the Auditory nerve/CN VIII?
The outter ring of the tympanic membrane.
What is the annular membrane (annulus)?
The cavity in the middle ear which houses the ossicles.
What is the tympanic cavity?
The less numerous receptory cells in the organ of corti which connect to the cochlear nerve.
What are the inner hair cells?
Semicircular canal that runs on the saggital plane and detects up-down head movements
What is the anterior/superior semicircular canal
Area of the brain which the auditory pathway must go through before it reaches the thalamus.
What is the brainstem? (medulla, pons and midbrain)
Medial protective cartillage which partially covers the EAC.
What is the Tragus?
The function of the stapedius muscle.
What is acoustic reflex?
The mechanically operated hatches on top of stereocillia which let in the potassium rich endolymph into the hair cell.
What are the tip links?
Bulges at the stems of the semicircular canals.
What is an ampulla?
2/3rds of the fibers in the auditory pathway will decussate before arriving here.
What is the superior olivary complex?
Cavity under the fold of the helix.
What is the Scaphoid fossa?
The gain caused by the impedence mechanism in the middle ear.
What is +32.9 dB SPL gain?
The window at the apex of the cochlea which allows the traveling wave to travel back out into the tympanic cavity.
What is the helicotrema?
Membranous labrynth chamber which deals with head tilts and balance vertically
What is the utricle?
Structure in the auditory pathway in the midbrain.
What is the inferior colliculus?