18 Questions
What is the main function of the utricle?
Detect changes in head position from an upright position
What is the function of the dark cells surrounding the utricle and saccule?
Produce endolymph
Why do persons or animals without otolith organs or defective otoliths have poorer abilities to sense motion and orientation to gravity?
Absence of structures sensitive to gravity
In which direction do the otolith organs, specifically the saccule, detect changes in head position?
From a recumbent position
What stimuli does the utricle primarily detect?
Gravity
How do otolith organs contribute to the detection of movement?
By detecting changes in head position
What is the main function of the utricle and saccule in the context of the otolith organs?
Detecting linear acceleration and head tilts
Which type of movement would excite hair cells on one side while inhibiting hair cells on the other side?
Tilting along the axis of the striola
How do head tilts relate to certain accelerations in terms of otolith organs?
Head tilts mimic certain accelerations
What is the impact of damage to the vestibular hair cells on vestibular function?
Causes imbalance in vestibular function
Where are the generated potentials transferred from the first neuron in the vestibular pathway?
To the vestibular nuclei inside rhombencephalon
What will impair vestibular function if damaged according to the text?
Damage to the vestibular nuclei
What is the main function of the utricle in the vestibular system?
Transducing head position information
What is the function of dark cells in the auditory system?
Producing mucus for lubrication
Why are otolith organs important in the vestibular system?
Help in maintaining balance during static positions
In what orientation are the otolith organs positioned in the vestibular system?
Horizontal orientation
What is the primary function of the saccule in the vestibular system?
Detecting linear acceleration
Which statement accurately describes the importance of the otolith organs?
Essential for head position sensing and balance control
This quiz covers the orientation of the utricular and saccular maculae in the head, as well as the forces acting on the head and the resulting displacement of the otolithic membrane of the utricular macula. It also explores how different positions and accelerations due to translational movements affect hair cell excitation and inhibition.
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