Components that make up the ear
These parts are mainly concerned with the transfer of sound to the internal ear and with equilibrium
What are the external and middle parts
The three cavitis in the bony labyrinth
what are the cochlea, vestibule and semicircular canals
Contains sensory organ at one end
What is the ampulla
This CN divides into the chochlear nerve and vestibular nerve at this location
Where is the lateral end of the internal acoustic meatus
Canal leading from the auricle to the tympanic membrane to conduct sound
External Acoustic meatus
Consist of three parts: anterior, posterior and horizontal
What are the semicircular canals
watery fluid similar to intracellular fluid
What is the stapes
Where sound is conducted- houses the auditory ossicles
What is the tempanic membrane
Communicates with the bony cochlea anteriorly, the semicircular canals posteriorly, and the posterior cranial fossa by the vestibular aqueduct
Qhat is the vestibule
Sensitive to gravitational pull and linear accelleration
what is the maculae
Small oval window occupied by the base of the stapes
form a mobile chain comprised of 3 small bones across the tympanic cavity
What are the auditory ossicles: malleus, incus, stapes
shell- shaped cavity concerned with hearing
chochlea
Contains cell bodies of the sensory neurons located in internal acoustic meatus
This CN is responsible for the special sense of hearing and vestibular components
what is CN VIII- vestibulocochlear
Located in the middle ear, moves in response to air vibration
What is the tympanic membrane
swelling at one end where diameter is increased is called the bony ampulla
semicircular canals
Two components of the Maculae:
Vestibular refers to Inner as hearing refers to what
What is middle