A&p Lab Chapter 25

Front 1

otitis media

Back 1

inflammation of the middle ear

Front 2

myringotomy

Back 2

surgical incision of the tympanic membrane

Front 3

otoscope

Back 3

instrument for examing the external canal and tympanic membrane

Front 4

speculum

Back 4

mirror for the otoscope

Front 5

presbycusis

Back 5

gradual deterioration and atrophy of the spiral canal of corti, loss in ability to hear high tones and speech sounds

Front 6

mechanisms of hearing

Back 6

external auditory canal-> middle ear-> internal ear-> corti

Front 7

rinne test

Back 7

test conduction and sensorineural deafness.
tuning fork on mastoid-> no longer audible-> near ear canal (air conduction)-> hear sound good. repeat starting near the ear canal-> no longer sound-> mastoid-> hear sounds (conduction deafness)

Front 8

weber test

Back 8

test conduction deafness
tuning fork in the air around head

Front 9

audiometry

Back 9

using an audiometer to test for hearing loss

Front 10

audiometer

Back 10

exposes ear to sound stimuli of different frequencies and intensities

Front 11

saccule and utricle

Back 11

part of the vestibular apparatus which maintains equilibrium contain a small thickened region called the macula

Front 12

barany test

Back 12

test for nystagmus

Front 13

nystagmus

Back 13

involuntary rolling of the eyes in any direction or the trailing of the eyes in one direction followed by rapid movement in the other direction

Front 14

romberg test

Back 14

determines integrity of the dorsal white column of the spinal cord which transmits impulses to the brain about proprio receptors involved with posture

Front 15

mechanisms of dynamic equilibrium

Back 15

semicircular canals are involved in this type of equilibrium which is the maintenance of the body position in response to rotational acceleration/decceleration

Front 16

mechanism of static equilibrium

Back 16

maculae in the vestibule contain the hair cells which are essential to this type of equilibrium, which is the maintenance of body posture in response to the force of gravity.