Term
| what is the external ear responsible for? |
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Definition
| gathering sounds from accoustical environment and funneling them into the auditory canal |
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Term
| the most noticeable feature of the outer ear? |
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Definition
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Term
| the pinna is made entirely of? |
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Definition
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Term
| the anatomy of the auricl is such that it is more efficient at delivering __________ frequency sounds rather than _____________ frequency sounds |
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Definition
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Term
| the pinna also helps in ___________ of sounds delivered to the head |
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Definition
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Term
| this is the protective flap originating from the front of the pinna and protruding back toward the rear of the pinna |
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Definition
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Term
| this is a large cup shaped depression to the rear of and below the tragus which forms the entrance to the ear canal |
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Definition
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Term
| the concha has a diameter of _______cm in adults |
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Definition
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Term
| what forms the actual entrance to the external auditory canal/ exteral auditory meatus? |
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Definition
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Term
| the _____ is a tube, formed in the side of the head, begining at a slight upward angle for approximately 1 inch in adults |
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Definition
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Term
| the shape ofthe external auditory canal is ? |
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Definition
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Term
| what is the external auditory canal lined with? |
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Definition
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Term
the outer 1/3 portion of the external auditory canal is?
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Definition
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Term
| the __________ portion of the EAC is where cerumen is produced |
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Definition
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Term
these are the two things in the first portion of the EAC?
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|
Definition
1. cerumen
2. hair follicles |
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Term
| cerumen usually looks how? |
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Definition
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|
Term
| cerumen naturally exits the ear throw? |
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Definition
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Term
| the 2/3 portion of the EAC passes through the ______portion of the temporal bone |
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Definition
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Term
| T/F there are glands and hair follicles in the inner 2/3 portionof the EAC |
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Definition
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Term
| this is where the two portions of the EAC meet |
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Definition
| osseocartilaginous junction |
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Term
| the ______ is a protrusion of manible and it comes to rest just below the OCJ when jaw is closed |
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Definition
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Term
| This is a condidtion that produes reffered pain, percieved in ear that constitutes significant amount of otalgia in adults |
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Definition
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Term
| the angle of the EAC is slanted ________ in children |
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Definition
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Term
| what is the pinna's function? |
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Definition
| localize sounds, sollect sound and directs it into the EAC |
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Term
the inner 2/3 function of the EAC is to
-
-
- |
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Definition
keep temperature and humidity constant
resonator for high frequencies
filter for low frequencies |
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Term
| the tm function is to change ______ energy (outer ear) into ______ mechanical energy (middle ear) |
|
Definition
acoustic energy
mechanical energy |
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Term
| _______ is a outer ear disorder where one or both ears are very small |
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Definition
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Term
| microtia surgery happens at what age? |
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Definition
| 5 because that is when the ear reaches adult ear stage |
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Term
| surgery of microtia may involve what type of graft? |
|
Definition
| rib cartilage and skin graft |
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Term
| _______ is a surgical procedure where the outer ear is changed to improve an individual's appearance? |
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Definition
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Term
| _______ is the closure of a body orifice that is normally open |
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Definition
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Term
| atresia can affect what part of ear? |
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Definition
| wither cartilaginous portion, bony portion, or entire EAC has not formed |
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Term
| _________ is a disorder that occurs after inner ear develop? |
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Definition
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Term
| aural atresia hearing is ________? |
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Definition
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Term
| _________ is the narrowing of ear canal? |
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Definition
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Term
| stenosis happens when ear canal fails to develop in utero around _______? |
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Definition
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Term
| stenosis does/does not produce hearing loss? |
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Definition
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Term
| canal stenosis repaired by widening of the ear canal using _________________? |
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Definition
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|
Term
| collapsing canals only occur during _______? |
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Definition
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Term
| _________ is an infection that occurs in the skin of the external auditory canal, also known as swimmer's ear |
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Definition
| external otitis or otitis externa |
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Term
T/F
several forms of external otitis are considered particularly dangerous to the patient and require rather aggressive therapy |
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Definition
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Term
| otitis externa is particularly threatening to _____ bc it may result in massive bone destruction in external, middle, and inner ears. |
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Definition
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Term
| otitis externa can result in ______ which is the general term for inflammaion of bone and _______ (infection in the bone or bone marrow) |
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Definition
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Term
| ________ is a fungal external ear infection which is caused by over use of ear drops |
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Definition
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|
Term
causes of otitis externa may result from allergic reactions to situations such as
-
-
-
-
|
|
Definition
ear plugs
hear aid earmolds
soap
other allergies |
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|
Term
| infection of the hair follicles is called? |
|
Definition
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|
Term
| should you or shouldnt you perform a hearing test while patient has infection? |
|
Definition
|
|
Term
| inflammation of the tympanic membrane |
|
Definition
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|
Term
symptoms of myringitis is
? |
|
Definition
| blood blisters on surface of TM |
|
|
Term
| how id myringitis treated? |
|
Definition
| lance blood blisters on surface of tm to relieve pain |
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|
Term
| _______ is a bony tumor in the EAC |
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Definition
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|
Term
| ______ is outward projections for surfaces of bone, ppl who do a lot of cold water swimming |
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Definition
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|
Term
| how are exostoses treated? |
|
Definition
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|
Term
| TM perforation can occure when? |
|
Definition
| excessive pressure builds up like flying or diving |
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|
Term
| how do you treat myringoplasty? |
|
Definition
|
|
Term
| why is it easier to repair ruptures from trauma that those from disease? |
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Definition
| traumatic perforations will usually heal themselves |
|
|
Term
| where is the more sucessful perforation located in the TM |
|
Definition
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|
Term
| the tympanic membrane is ______ shape |
|
Definition
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|
Term
| the TM is made up of _____ layers |
|
Definition
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|
Term
three layers of the TM are made up of
?
|
|
Definition
epidermal lining
fibrous
mucosal |
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|
Term
| this layer of the tympanic membrane provides support ? |
|
Definition
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|
Term
what are the two sets of sublayers within teh middle layer of the TM
-
- |
|
Definition
radial fibers
circular fibers |
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|
Term
| supportive fibers of the TM where the TM tends to be stiffer |
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Definition
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Term
| the largest and most latral middle ear bone. |
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Definition
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Term
| the ______ of teh malleus ends in teh center of the TM |
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Definition
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Term
| the point of greatest retraction is called the _______ |
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Definition
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Term
| the outer layer of the TM migrates from the _______ |
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Definition
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Term
| when looking at the TM what landmarks can be noted? |
|
Definition
malleus
long process of incus
rim of TM |
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