Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
Drainage from the middle ear drains into the __ What are the parts of the outer ear? (3) what is the sensory innervation of the auricle? (6) The auditory canal aka __ has what two parts? |
-pharynx -auricle, external meatus, tympanic membrane -V3 (auricotemporal), C3, C3, CN7, CN 9, CN10 -external acoustic meatus -cartilaginous portion, and bony portion |
|
|
What happens if the tympanic membrane bulges outward? If damage is done to the ___ you can still hear but not a well. Why are you able to hear with damage to this organ? |
puss will accumulate and ear drainage is less successful -tympanic membrane -because you are able to hear b/c of transmission of the bones |
|
|
In the middle ear, __ is an irregular air filled space in the petrous potion of the temporal bone lined with mucous membrane What does the middle ear communicate with? Borders of middle ear: lateral? roof? floor? posterior? anterior? medial? |
-tympanic cavity -mastoid cells and nasopharynx -tympanic membrane -tegmen tympani -jugular wall -pyramidal eminence (M. stapedius), entrance to mastoid air cells through auditus into the antrum of the mastoid -opening of auditory tube, semi canal for <. tensor tympani -promontory, tympanic plexus, oval window, round window, prominence of the facial canal and lateral semicircular canal |
|
|
__ is innervated by the V3 manubrium of malleus and dampens the sound. __ also will dampens the sound and is innervated by CN 7, damage to this muscle causes hypercusis. *has attenuation reflex (CN 8--> CN7)* __ is innervated by CN 7 What covers the oval window?
|
-M. Tensor tympani -M. Stapedius -Chorda tympani -stapes |
|
|
__ is a branch from the internal carotid plexus __ is a branch from the glossopharyngeal nerve CN _ is for hearing and balance the membranous labyrinth has what 4 parts? what does it contain? |
caroticotympanic tympanic -8 (vestibulocochlear) -cochlea, vestibule, semicircular canals -perilymph *(which is in the vestibule)* -cochlear duct, saccule, utricle, semicircular ducts -endolymph *(which is in the cochlea)* (exess fluid=meniere's disease) |
|
|
__ transmits vibrations from foot plate of stapes to scala vestibuli Both the saccule and the utricle contain _, a sense organ that is innervated by the vestibular division of CN 8 that is responsible for position sense and linear acceleration The macula utriculi has the otolithic membrane that contains calcium and carbonate crystals called _ |
oval window -macula -otolithis |
|
|
_ is a transverse ridge of thickened epithelium in the ampulla __ is a glycoprotein spanning the ampulla extending the crista as a directional vane Hair cells have __ and afferent innervation by __ sensory neurons of vestibular ganglions (for sensation of the angular acceleration and deceleration) |
crista ampullaris cupula apical specializations -bipolar |
|
|
In the semicircular canals, the membranous labyrinth has the ___, which opens into the utricle with 5 openings, and the __ which are dialations at the canal ends and contains the *cristae (sense organs for angular acceleration and deceleration)* innervation of membranous labyrinth? Cochlea is divided by what? (3) |
semicircular ducts ampullae CN8 -scala vestibuli, tympani and media |
|
|
The scala media contains the __ which is the organ of hearing. The organ of corti rest on the _ whch transmits the hearing impulse from the middle ear. It also contains the __ *which is the only epithelium in the body and produces endolymph* |
organ of corti basilar membrane stria vascularis
|
|
|
__ gelatinous shelf spanning internal spiral tunnel. displacement if this membrane causes deformation of sterocilia of hair cells. __ is a bipolar sensory neurons innervating the hair cells. (present in __, the corkscrew center of the cochlea) in the basilar membrane (floor of organ of corti), fibers that are narrow and stiff near base of cochlea by oval window respond to __ frequencies. and fibers wider and floppy near apex of cochlea respoind to the _ frequencies |
-tectorial membrane -spiral ganglion -modiolus -high -low
|
