RUSVM Physio Neuro Part 10 Flashcards
What is the medical term used for the loss of voluntary motor coordination?
Ataxia
What is the medical term used for head twist
Head tilt
What is the medical term used for involuntary movement of the eyes
Nystagmus
Where is the sensory component of the vestibular system located?
Inner ear
T/F Unilateral sensory organs are located in the inner ear
False- BILATERAL
What is the canals called that detect rotational/angular acceleration and deceleration of the head
Semicircular canals
What detects linear acceleration and deceleration and static tilt of the head
The utricle and saccule
What is the major function of the vestibular system
Maintain equilibrium or balance
What is the name of the sensory cells of the vestibular system ?
Hair cells
Where are vestibular hair cells located
the macular of otholits and ampullae of the canals
If the stereocilia are bent towards the kinocilium, the hair cell will what?
the hair cell will depol.
What causes the movement of cupula
Endolymph
Which brain stem UMN pathway receives input from the sensory part of the vestibular system?
Medial
T/F Spontaneous nystagmus is probably caused by abnormal asymtric action potential inputs to the brainstem from the vestibular apparatus on the 2 sides of the head
True
