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22 Cards in this Set
- Front
- Back
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What part of the ear canal is involved in earwax production?
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The ENTIRE ear canal
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What is earwax made of?
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dried dead skin, secretions from cerumen & sabaceous glands, shed hair
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Which part of the ear canal contains the ceruminous glands & sabaceous glands? What are they on the end of/next to?
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-located on cartilaginous (outer 2/3) of EAC
-glands are next to or @ the end of hair follicles |
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What does the bony EAC do in regards to making earwax?
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-contributes to dried dead skin lining
*does not contain cer. or sab. glands |
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How is earwax "shedding" different from the rest of the body (i.e. skin shedding)?
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skin lining migrates outward INSTEAD of flaking off like skin
-similar to how a snake sheds its skin |
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How long does it take for the skin lining to reach the border of the cartilaginous portion of the EAC?
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several months
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juncture
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wrinkles
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juncture
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wrinkles
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Is earwax usually a problem?
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No
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Earwax function?
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1) protection
2) lubricate the ear canal lining |
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How does earwax impaction occur?
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when skin flakes, hair, gland secretions, dust, other obj. are in large quantities
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Earwax impaction causes?
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1) mild conductive hearing loss
2) otalgia 3) vertigo 4) coughing |
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How do you "cure" earwax impaction?
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removal alleviates symptoms--> need med referral for removal
-audiologist does "cerumen management" |
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What are some possible/common foreign objects that cause obstruction?
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eraser, beads, bugs, cotton, pebbles, etc.
*can also be a source for "strange sounds" |
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What are the types of ear canal obstructions?
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1) earwax impaction
2) foreign objects 3) ear canal collapse 4) ear canal growths |
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What population(s) is/are an ear canal collapse most common?
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1) children <7
2) elderly |
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How does ear canal collapse occur in elderly?
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loss of elasticity & strength of tissues causes cartilaginous portion of EAC to become more flexible=can't hold itself up so it collapses
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How does ear canal collapse occur in children?
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-hearing tests from ear phones
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What is an exostoses?
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-bony growth capped w/ cartilage growing out of EAC wall
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What is the most common benign tumor in the EAC?
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exostoses
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Are exostoses singular or multiple? uni or bi?
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can be singular or multi
can be uni or bilateral; more often bi |
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What causes exostoses?
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1) irritation
2) idiopathic (don't know cause) |
