Reading...
Play button
Play button
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;
29 Cards in this Set
- Front
- Back
|
auricle/pinna
|
ear lobe-directional sensitivity
|
|
|
typmanic membrane
|
"eardrum"
|
|
|
typmanic cavity
|
middle ear
|
|
|
ceruminous gland
|
secretes eardrum
|
|
|
malleus
|
"hammer"
|
|
|
what is the anatomy of the ear?
|
external ear-collection
middle- amplification inner-detection and balance |
|
|
external auditory canal
|
canal that collects sound contains ceruminous glands
|
|
|
tensor tympani
|
stiffens the tympanic membrane
|
|
|
stapedius
|
reduces movement of stapes at oval window
|
|
|
semicircular canals
|
inner ear structure that contains auditory receptors (snail)
|
|
|
amplitude
|
loudness of sound measured in decibels
|
|
|
frequency
|
pitch of sound measures in hertz
high note=high hertz |
|
|
6 basic steps of hearing process
|
1. sound waves activate the tympanic membrane (eardrum)
2. sound amplified by auditory ossicles (malleus, incus, stapes) 3.vibration of air are transfered to vibrations of liquid at oval window 4. basilar membrane moves 5.hair cells move against tectorial membrane 6. cranial nerve V111 is activated |
|
|
5 major steps in the auditory pathway for the ear to the cortex
|
1. cranial nerve v111 synapses on cochlear nucleus in the medulla
2. info crosses bilaterally 3. inferior colliculus is activated for sound localization 4. medial geniculate nucleus of the thalamus is activated 5. primary auditory cortex in the temporal lobe is activated |
|
|
utricle
|
responds to tilting and horizontal movement (car)
|
|
|
incus
|
"anvil"
|
|
|
stapes
|
stirrup
|
|
|
Eustachian tube
|
canal that equalizes pressure in middle ear
|
|
|
vestibule
|
inner ear structure for equilibrium and linear movement
|
|
|
cochlea
|
inner ear structure ("SNAIL") that contains auditory receptors
|
|
|
organ of CORTI (of the cochlea)
|
structure in scala media that contains auditory receptors
|
|
|
basilar membrane
|
organ of corti rests on this membrane
|
|
|
tectorial membrane
|
membrane that forms the "roof" over the organ of Corti
|
|
|
saccule
|
membranous labyrinth of vestibule
-responds to vertical movement (elevator) |
|
|
oval window
|
membrane attached to stirrup, transfers sound vibration from middle ear to inner ear
|
|
|
cerumen
|
ear wax
|
|
|
hair cells
|
auditory receptors
|
|
|
otosclerosis
|
abnormal growth of the middle ear bones
|
|
|
round window
|
cochlear membrane that sound vibration "exit"
|
