SENSES Flashcards
is the transduction of sound waves into a neural signal that is made by the structure of the ear
Hearing / Audtion
the large, fleshy structure on the lateral aspect of the head. also termed as Pinna, but preferably used in ears that can be moved such as the external ears of cats.
auricle
direct sound waves toward the auditory canal
c-shaped curves of the auricle
consist of the auricle, inner ear, and tympanic membrane
external ear
is located at the end of the auditory canal which vibrates when it is struck by sound waves
tympanic membrane/eardrum
a tube that runs from the outer ear to the eardrum
external acoustic meatus
the middle ear consists of a space spanned by three small bones
ossicles
attached to the tympanic membrane, and articulates with the incus
malleus/hammer
articulates with the stapes
incus/anvil
attached to the inner ear, where the sound waves will be transduced into a neural signal
stapes/stirrup
connected to the pharynx through the Eustachian tube, which helps equilibrate air pressure across the tympanic membrane
middle ear
often described as the bony labyrinth, as it is composed of a series of canals embedded within the temporal bone
inner ear
the two separate regions found in the inner ear which is responsible for hearing and balance
vestibule and cochlea
the two separate regions found in the inner ear which is responsible for hearing and balance
vestibule and cochlea
is transduced into neural sound within the cochlear region of the inner ear, which contains sensory neurons of the spiral ganglia
sound
is located within the spiral-shaped cochlea of the inner ear
ganglia
it is attached to the stapes through the oval window
cochlea
is located at the beginning of the fluid-like tube within the cochlea called the scala vestibuli
oval window
extends through the oval window, and travels above the cochlear duct, which is the central cavity of the cochlea that contains the sound-transducing neurons.
scala vestibuli
also called the fluid-like tube, returns to the base of the cochlea, this time traveling under the cochlear duct.
scala tympani