Beginner Vestibule Quiz

Q1. Where is the vestibule located within the bony labyrinth?

• Within the external acoustic meatus
• Between the cochlea and semicircular canals
• Between the tympanic membrane and malleus
• Inside the auditory tube

Q2. Which two membranous labyrinth structures lie within the vestibule?

• Organ of Corti and modiolus
• Utricle and saccule
• Cochlear duct and ampulla
• Malleus and incus

Q3. Which opening in the lateral wall of the vestibule is occupied by the stapes footplate?

• Round window
• Internal acoustic meatus
• Cochlear aqueduct
• Oval window

Q4. What do the utricle and saccule primarily detect?

• Angular acceleration only
• Middle-ear pressure
• Sound frequency
• Linear acceleration and head position relative to gravity

Q5. What is the sensory receptor area of the utricle and saccule called?

• Macula
• Crista ampullaris
• Spiral ganglion
• Organ of Corti

Q6. What structures are embedded in the otolithic membrane?

• Cochlear pillars
• Otoconia
• Cupulae
• Auditory ossicles

Q7. Which fluid fills the utricle and saccule?

• Cerebrospinal fluid
• Endolymph
• Synovial fluid
• Perilymph

Q8. Which fluid surrounds the utricle and saccule within the bony vestibule?

• Perilymph
• Blood plasma
• Endolymph
• Mucus

Q9. Which cranial nerve carries sensory information from the vestibular apparatus?

• Glossopharyngeal nerve, CN IX
• Cochlear division of CN VIII only
• Facial nerve, CN VII
• Vestibular division of CN VIII

Q10. Which otolith organ is larger and generally positioned more superiorly within the vestibule?

• Saccule
• Posterior ampulla
• Cochlear duct
• Utricle