Semicircular Canals
Another name for the anterior canal
Superior canal
The term for calcium carbonate crystals that are located on top of the otolithic membrane
The bone that houses the vestibular organs
Temporal bone
Risk factors for this vestibular problem include older age, female gender, and osteoporosis/osteopenia
BPPV
The total number of semicircular canals
6
The semicircular canal that runs parallel with your earlobe
Posterior canal
The "trash compacter" for the ear that breaks down loose "ear rocks"
Dark Cells
Nystagmus is labeled by the _______ phase
Fast
Asking questions about pain/pressure in the ear, discharge from the ear, tinnitus, and hearing loss allow you to screen for the involvement of this organ.
The cochlea
The time that it takes the vestibular-occular reflex to occur
10 milliseconds
Force directing the hair cells away from the ___________ causes inhibition
Kinocilium
The primary organ that would detect the linear acceleration/deceleration of an elevator ride
Saccule
Left vestibular hypofunction causes the person to feel as if their head is turning to the _________
Right
Dizziness (room spinning) is a primary complaint for those with semi-circular canal dysfunction, while __________ is a primary complaint for those with dysfunction of the otolithic organs
Imbalance
The dimensions of the utricle and saccule
2mm x2mm
The kind of force that is detected by the cilia in each cupula
Angular acceleration and deceleration
The primary organ that would detect linear acceleration/deceleration of riding on a bus
utricle
Ingestion of this substance causes the endolymph inside the cupula to become lighter than the endolymph outside the cupula, creating the illusion that one's head is spinning when lying in a supine position
Alcohol
Nystagmus always beats toward the more neurally ________ side
active
The diameter of the membranous portion of each semicircular canal.
0.25 mm
Utriculofugal displacement is excitatory for these canals
Anterior and posterior canals
The medial wall of this organ contains hair cells that detect gravitational/positional forces and linear acceleration/deceleration.
Saccule
The right anterior canal is a functional pair with this canal
Left posterior canal
These quick eye movements are common with anxiety or central nervous system degenerative disorders
saccadic intrusions
The tonic electrical activity of the vestibular organ when the body is at rest
100 pulses/second