Sensory Systems: Vestibular System

21 Questions | Total Attempts: 1104

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Vestibular System Quizzes & Trivia

Questions and Answers
  • 1. 
    What is the main purpose of the vesibular system?
    • A. 

      Provides input for body orientation & movement

    • B. 

      Assists in one's sense of hearing

    • C. 

      Convey's info about the body's position/location

    • D. 

      Assists with fine motor movement

  • 2. 
    What type of gelantinous material are hair cells of vestibular system in?
    • A. 

      Tectorial membrane

    • B. 

      Cupula

    • C. 

      Otolithic membrane

    • D. 

      A and b

    • E. 

      B and c

  • 3. 
    What makes the gelationous material of vestibular system special?
    • A. 

      Low specific gravity

    • B. 

      More weight

    • C. 

      Less viscous

    • D. 

      Higher density

  • 4. 
    How much head tilt can the utricle and saccule detect?
    • A. 

      0.1 deg

    • B. 

      0.5 deg

    • C. 

      1 deg

    • D. 

      10 deg

  • 5. 
    ___________ is sensitive to head tilt from sideways position. _____________ is sensitive to head tilt from the upright position.
    • A. 

      Saccule; utricle

    • B. 

      Saccule; semi circular canals

    • C. 

      Utricle; saccule

    • D. 

      Semicircular canals; ampulla

  • 6. 
    When the head is perfectly upright, the utricle is:
    • A. 

      At a 90 deg angle to the head

    • B. 

      At a 30 deg angle to the head

    • C. 

      Perfectly upright

    • D. 

      60 deg angle to the head

  • 7. 
    What does the vestibular system detect?
    • A. 

      Static Equilibrium

    • B. 

      Upright Posture

    • C. 

      Linear Acceleration

    • D. 

      All of the above

    • E. 

      2 of the above

  • 8. 
    How many functional units do the SSCs (semicircular canals) make?
    • A. 

      1

    • B. 

      3

    • C. 

      6

  • 9. 
    The Right Anterior SSC and the Left Anterior SSC make one functional unit
    • A. 

      True

    • B. 

      False

  • 10. 
    The Right Lateral SCC and the Left Lateral SCC make one functional unit
    • A. 

      True

    • B. 

      False

  • 11. 
    When the hair cells are bent TOWARD  the kinocilium the nerve endings:
    • A. 

      Hyperpolarize

    • B. 

      Depolarize

    • C. 

      Reach tonic level dischange

    • D. 

      Reduce the number of action potentials

  • 12. 
    What are the SSCs in vestibular system most sensitive to?
    • A. 

      Linear acceleration

    • B. 

      Angular acceleration & rotation

    • C. 

      Sound

    • D. 

      Gravity

  • 13. 
    During the beginning of a rotation, the endolymph in the SSC goes in the __________ direction as the rotation, resuting in __________ of hair cells.
    • A. 

      Same; excitation

    • B. 

      Opposite; inhibition

    • C. 

      Same; inhibition

    • D. 

      Opposite; excitation

  • 14. 
    The gel-material of the hair cells in the SCCs for the vestibular system is called:
    • A. 

      Tectorial membrane

    • B. 

      Otolithic membrane

    • C. 

      Basilar membrane

    • D. 

      Cupula

  • 15. 
    How many nuclei are in the vestibular nuclear complex?
    • A. 

      2

    • B. 

      4

    • C. 

      5

    • D. 

      6

  • 16. 
    Where is vestibular sensation transmitted to in the brain?
    • A. 

      VPM of thalamus

    • B. 

      Medial Longitudinal Fasiculus

    • C. 

      VPL of thalamus

    • D. 

      Vestibular Nuclear Complex

  • 17. 
    What does the Lateral Vestibulospinal Tract control (reflex)?
    • A. 

      Director of ocular movements

    • B. 

      Interacts with cerebellum for overall motor control

    • C. 

      Postural control

  • 18. 
    What does the vestibulo-ocular do and what what tract does it utilize?
    • A. 

      Smooth, horizontal, conjugate eye movements; Medial Lemniscus

    • B. 

      Smooth, vertical, conjugate eye movements; Medial Lemniscus

    • C. 

      Smooth, horizontal, conjugate eye movements; Medial Longitudianl Fasiculus

    • D. 

      Smooth, vertical, conjugate eye movements; Medial Longitudianl Fasiculus

  • 19. 
    If you start dozing off in class and your head bobs down and then jerks back up, what reflex is occuring?
    • A. 

      Medial Vestibulospinal Tract

    • B. 

      Medial Longitudinal Fasiculus

    • C. 

      Vestibulocerebellar Reflex

    • D. 

      Lateral Vestibulospinal Tract

  • 20. 
    What Brodmann's areas of the post central gyrus does vestibulat sensation information go to?
    • A. 

      3,1,2

    • B. 

      18,19

    • C. 

      6,8

    • D. 

      3

  • 21. 
    If there is damage to the vestibulo-cerebellar reflex tract that controls eye movements, what will occur?
    • A. 

      Constant divergence

    • B. 

      Inability to accommodate

    • C. 

      Nystagmus

    • D. 

      Vertical phoria

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