Vestibular system Flashcards
What are the 3 parts of the vestibular system?
somatosensory system, visual system, and vestibular portion of the inner ear
What are two parts of the inner ear?
the auditory portion and the vestibular portion
What does the vestibular portion consist of?
semicircular canals and otolith organs
What do the semicircular canals do?
allow humans to monitor head changes/planes of motion
How does the semicircular canals work together with the visual system?
They work together to correct eye movements as a result of the direction of the head.
Which of the 3 canals is tested to assess one’s balance?
horizontal or lateral semicircular canal
What do the otolymph organs indicate?
linear acceleration
What is the function of the vestibular ocular reflex (vestibular ocular reflex)?
stabilizes images on the center of the visual field while the head is moving via through a bunch of adjustments of the eye muscles called nystagmus; helps with postural control
The vestibular ocular reflex produces an eye movement _____ to the head movement.
opposite
An abnormal VOR is
being unable to keep your eyes focused on an image while your head is moving in one direction
To have balance, one must have
accurate sensory input, appropriate motor output, and vestibular reflexes
Patients who experience imbalance may also experience difficulty with _____
concentration and memory
Semicircular canals provide us with information on ______
angular acceleration
