Vestibulocochlear nerve - Quiz
Vestibulocochlear nerve
  • 1. Which cranial nerve is known as the vestibulocochlear nerve?
A) Cranial nerve VIII
B) Cranial nerve V
C) Cranial nerve X
D) Cranial nerve II
  • 2. What information does the vestibulocochlear nerve transmit to the brain?
A) Motor control and pain
B) Vision and touch
C) Sound and equilibrium
D) Taste and smell
  • 3. Which structure in the brainstem sends motor and modulatory information to the cochlea via the vestibulocochlear nerve?
A) Cerebellar cortex
B) Thalamus
C) Hypothalamus
D) Superior olivary complex
  • 4. What type of neurons primarily make up the vestibulocochlear nerve?
A) Unipolar neurons
B) Pyramidal neurons
C) Multipolar neurons
D) Bipolar neurons
  • 5. What is the name of the junction between the pons, medulla, and cerebellum that contains the 8th nerve?
A) Pontomedullary junction
B) Spiral ganglion
C) Internal acoustic meatus
D) Cerebellopontine angle
  • 6. Which artery usually accompanies the vestibulocochlear nerve?
A) Basilar artery
B) Middle cerebral artery
C) Labyrinthine artery
D) Internal carotid artery
  • 7. The labyrinthine artery typically branches off from which artery?
A) Posterior communicating artery
B) Anterior inferior cerebellar artery
C) Superior cerebellar artery
D) Vertebral artery
  • 8. Where does the cochlear nerve start?
A) Spiral ganglia
B) Utricle
C) Semicircular canals
D) Organ of Corti
  • 9. Which cells in the organ of Corti are responsible for the activation of afferent receptors?
A) Outer hair cells
B) Supporting cells
C) Bipolar cells
D) Inner hair cells
  • 10. What are the two competing theories regarding sound transmission in the cochlear nerve?
A) Conductive theory and sensorineural theory
B) Vibration theory and pressure theory
C) Frequency theory and intensity theory
D) Place theory and temporal theory
  • 11. Where are the cristae located within the vestibular system?
A) Cochlea
B) Saccule
C) Utricle
D) Ampullae of the semicircular canals
  • 12. What stimulus do the hair cells of the cristae respond to?
A) Vertical linear force
B) Sound pressure waves
C) Rotational acceleration
D) Chemical concentration
  • 13. Which sensory organ responds to vertically directed linear force?
A) Maculae of the saccule
B) Maculae of the utricle
C) Cristae of the ampullae
D) Spiral ganglia
  • 14. What stimulus do the hair cells of the maculae in the utricle respond to?
A) Vertical force only
B) Rotational acceleration
C) Sound intensity
D) Linear acceleration
  • 15. From which embryonic structure is the vestibulocochlear nerve derived?
A) Otic placode
B) Optic vesicle
C) Neural crest
D) Branchial arch
  • 16. The vestibulocochlear nerve carries axons of which type?
A) General somatic afferent
B) Special somatic afferent
C) General visceral efferent
D) Special visceral afferent
  • 17. Through which bone does the vestibulocochlear nerve exit the inner skull?
A) Temporal bone
B) Frontal bone
C) Sphenoid bone
D) Occipital bone
  • 18. Where does the vestibulocochlear nerve emerge from the brainstem?
A) Cerebellar peduncle
B) Pontomedullary junction
C) Medulla-spinal cord junction
D) Midbrain-pons junction
  • 19. What specific feature of the temporal bone does the vestibulocochlear nerve pass through?
A) Foramen magnum
B) Internal acoustic meatus
C) Stylomastoid foramen
D) Jugular foramen
  • 20. Which symptom is associated with damage to the vestibulocochlear nerve?
A) Loss of taste
B) Visual acuity loss
C) Vertigo
D) Muscle atrophy
  • 21. Which diagnostic test involves comparing air conduction to bone conduction?
A) Snellen chart
B) Ophthalmoscopy
C) Rinne test
D) Reflex hammer test
  • 22. In a Rinne test, what result indicates an abnormal or negative outcome?
A) AC = BC
B) BC > AC
C) AC > BC
D) BC = 0
  • 23. What is considered a normal or positive result in a Rinne test?
A) AC > BC
B) BC > AC
C) BC = AC
D) AC = 0
  • 24. If the Rinne test is negative and the Weber test lateralizes to the abnormal side, what is the diagnosis?
A) Normal hearing
B) Conductive hearing loss
C) Mixed hearing loss
D) Sensorineural hearing loss
  • 25. What frequency range is used for pure-tone testing as mentioned in the text?
A) 500–8000 Hz
B) 1000–5000 Hz
C) 10000–20000 Hz
D) 20–200 Hz
  • 26. What decibel range is considered normal hearing sensitivity?
A) 75-100 dB HL
B) 25-50 dB HL
C) 0-24 dB HL
D) 50-75 dB HL
  • 27. What test assesses the immittance of the tympanic membrane?
A) Otoscopy
B) Otoacoustic emissions
C) Speech testing
D) Tympanometry
  • 28. Which test measures the response of outer hair cells in the cochlea?
A) Otoscopy
B) Speech tests
C) Tympanometry
D) Otoacoustic emissions
  • 29. Why are the terms 'acoustic' or 'auditory' nerve falling out of use?
A) They ignore the vestibular system role
B) They only refer to the cochlea
C) They are too difficult to spell
D) They were never accurate
  • 30. Which symptom can manifest as a ringing sensation triggered by gaze?
A) Nystagmus
B) Gaze-evoked tinnitus
C) Loss of equilibrium
D) Motion sickness
  • 31. If AC and BC are worse than 25 dB HL and the air-bone gap is not bigger than 10 dB, what is the diagnosis?
A) Normal hearing
B) Central auditory processing disorder
C) Conductive hearing loss
D) Sensorineural hearing loss
  • 32. Which procedure is used to view the ear canal and tympanic membrane?
A) Pure-tone testing
B) Speech testing
C) Tympanometry
D) Otoscopy
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