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a and p lab sem. 2

hearing and equilibrium

QuestionAnswer
the _________ (____________) ________connects middle ear to pharynx that helps to regulate pressure in the middle ear cavity. auditory (Eustachian) tube
the scala vestibuli is seperated from cochlear duct by the ___________ membrane vestibular
the __________ ____________ (_______ ____ ________), located in the cochlear duct, contains some 16,000 hearing receptor cells spiral organ (organ of Corti)
the membranous __________ _______ contains endolymph while the osseous __________ __________ and __________ _________ contain perilymph cochlear duct; scala tympani; scala vestibuli
the ______ or _______ directs sound waves to the middle ear pinna or auricle
the skin of the __________ ______________ _________ is lined woth ceruminous glans, which secrete a waxy substance external auditory meatus
the __________________ nerve, the eighth pair of cranial nerves, is responsible for the senses of hearing and equilibrium vestibulocochlear
the proper name for the eardrum is the ____________ ____________ tympanic membrane
the three auditory ossicles are the ___________, ________, and __________ malleus; incus; stapes
in the spiral organ (organ of Corti), receptor hair cells are positioned on the ___________ membrane and are covered by the _________ membrane basilar; tectorial
with the Rinne test when the tuning fork was on the mastoid process, we were testing for ____________ and _____________ deafness; if nothing heard= _____________ if heard louder through bone conduction then through air= _____________ conductive and sensorineural; sensorineural; conductive
auditory fatigue is an example of what common sensory phenomenon sensory adaptation
*activity 3 loud music example the 2 sounds are very different pitches. it is entirely possible that the young man has damage to teh receptor cells for the lower pitch (knocking sounds)
the young man wondered if he had a torn eardrum. how would his hearing be affected if this were the case very small perforations may not be affecting hearing noticeably, but larger tears would noticeably affect the loudness of sounds
*activity 3 plane ride example the chewing action will open the auditory tube and allow the pressures on the opposite sides of the tympanic membrane to equalize
the boney chamber located between the semicircular canals and the cochlea is the __________ vestibule
the __________ is a small patch of hair cells involved with senses of static equilibrium. the ___________ and _________ each contain one of these receptor structures macula; utricle; saccule
each semicircular canal has a swollen region called the _________ at its base. inside this swollen region is the __________ ______________ containing the sensory receptors for dynamic equilibrium ampulla; crista ampullaris
the semicircular canals are oriented at right angles to each other. the names of the individual canals are the _________, ___________ , _____________ canals lateral, anterior, posterior
the _________ is a gelatinous structure covering the hair cells of the crista ampullaris cupula
under what conditions did yo start to sway the most? why do you think that is so? most likely when eyes closed in both cases, because we use feedback from viewing stationary object to gauge our own body position
when your eyes were closed, what sensory organs were you relying on to maintain your balance. maculae in utricle and saccule, proprioceptors in muscles and joints, lamellated corpuscles on soles of feet
lateral semicircular canal = ___________ horizontal plane
anterior semicircular canal = ____________ coronal plane
posterior semicircular canal = ____________ sagittal plane
what could account for the different eye movements following each test different semicircular canal taking the brunt of the angular forces each time
discuss a theory describing the cause of motion sickness conflicting messages from inner ear and eyes cause sensation of nausea in same individuals
Created by: allijeli
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