HUS2-52 Auditory and vestibular pathways

What structures are responsible for detecting linear motion?

• Ampulla of semicircular duct

• Crista

• Utricle

• saccule

• Spiral organ

Scala vestibuli and scala tympani communicate at the

• apex

• modiolus

• spiral lamina

• spiral ganglion

• scala media

Endolymph is produced by

• outer hair cells in stria vascularis

• inner hair cells in stria vascularis

• marginal cells in stria vascularis

• tectorial membrane

• pillar cells around inner tunnel

Which of the following about the basilar membrane is correct?

• It is made up of collagen and inelastic fibres

• It seperates scala vestibuli from scala tympani

• It seperates scala vestibuli from scala media

• It is narrower and stiffer at base than at apex

• It produces perilymph

Which of the following about the auditory pathway is correct?

• It projects ipsilaterally

• It projects bilaterally, with ipsilateral preponderance

• It synapses at the ipsilateral superior colliculus

• It synapses at the contralateral inferior olivary nucleus

• It synapses at the contralateral medial geniculate body

Which of the following about the auditory pathway is correct?

• Primary auditory cortex is located in the transverse temporal gyrus

• Wernicke's area is included in the superior parietal lobule

• Wernicke's area is dominant in the right hemisphere

• Primary auditory cortex processes "what" and "where" information

• Right temporal plane is usually larger than the left, as often seen in right handers.

Which of the following about the vestibular pathway is correct?

• Vestibular nuclei project mainly contralaterally to ventroanterior complex of thalamus

• Vestibulospinal reflex stabilize head in space by activating neck muscles

• The abducens motor neurons and interneurons

  are used in VOR as well as in voluntary

  horizontal gaze initiated in the cortex

• Vestibular nuclei receive information from skin, joints, nuclei m. receptors

• Vestibular organs cannot project to cerebellum directly