The Auditory System Flashcards
The auditory apparatus (the ear) is made up of 3 parts. These are:
The outer ear. The inner ear. The middle ear.
The outermost part of the ear is comprised of 2 parts, which assist in the reception of auditory information. These are:
The pinna. The auditory canal.
The fold of cartilage on the outermost part of the ear, which directs sound into the auditory canal, is called the:
Pinna
The passage where sound is transmitted to the tympanic membrane from the pinna is called the:
Auditory canal
The middle of the ear is made up of 2 important components.These are:
The ossicles. The tympanic membrane/eardrum.
The innermost part of the ear, to which the oval window is attached, contains which important component of the auditory system?
The cochlea
Where might the oval window be found?
In the inner ear, behind the cochlea.
The spiral-shaped, fluid-filled tube contained in the inner ear is called:
The cochlea
Which receptor cells, found inside the cochlea, synapse onto spiral ganglion cells (SGC) in the brain stem?
Hair cells.
At what point are sound waves transferred from mechanical vibrations into electrical signals?
When the vibrations reach the cochlea, causing the hair cells to move.
Cells that are tuned to specific frequencies of sound, which convert signals to the vestibulocochlear nerve, are called:
Spiral ganglion cells (SGC)
The humming, buzzing or whistling sound heard in the absence of a noise stimulus is called:
Tinnitus
Which 2 things are likely to cause tinnitus?
Disease processes. Spontaneous activity.
Where does the vestibulocochlear nerve transmit the signals to before arriving at the auditory pathways?
The brain stem
After arriving at the brain stem, auditory information is received by cochlea nuclei at which part of the brain?
The pons-medulla
