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;
11 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
Conduction deafness |
When something hampers sound conduction to the fluids of the inner ear - earwax, perforated eardrum, middle ear infections & otosclerosis |
Hearing disorder |
|
|
Sensorineural deafness |
From damage to the neural structures - like hairs cells Can occur from loud noises
May somewhat be treated w/ cochlear implant |
Hearing disorder |
|
|
Tinnitus |
Ringing in ears |
|
|
|
Meniere's syndrome |
Where both semicircular canals and cochlear are affected -causing vertigo, nausea, vomiting, tinnitus & hearing impairment |
|
|
|
Static equilibrium |
Sense of head position in space with respect to gravity (Up & down, side to side) -Sensed by structures in the vestibule (saccule and utricle) |
Mechanism of equilibrium & orientation |
|
|
Maculae |
Respond only to changed in acceleration or velocity of head movement Help us maintain normal head position w/ respect to gravity -in saccule & utricle |
|
|
|
Otoliths |
Tiny stones in otoliths membrane -which covers hair cells Move over hair cells in saccule and the utricle to produce a stimulus Sense if you move up & down or side to side |
|
|
|
Vestibular nerve cells |
Innervate hair cells in vestibule |
|
|
|
Dynamic equilibrium |
Sensing of angular or rotational movements of the head -detected by the crista ampullaris found at the base of each semicircular canal |
|
|
|
Crista ampullaris |
Found at base of each semi circular canal |
|
|
|
Cupula |
Cone-like membrane over hair cells of crista When we rotate, the endolymph in semicircular canals flows in opposite direction of our body movement. These hair cells are bend & fibers of the vestibular nerve are stimulated |
|
