Beginner Cochlea Quiz

Q1. In which part of the temporal bone is the cochlea located?

• Mastoid process only
• Styloid process
• Squamous part of the temporal bone
• Petrous part of the temporal bone

Q2. What is the central bony core around which the cochlea winds?

• Modiolus
• Vestibule
• Incus
• Promontory

Q3. Which three longitudinal compartments are recognized in a cross section of the cochlea?

• Utricle, saccule, and ampulla
• Epitympanum, mesotympanum, and hypotympanum
• Scala vestibuli, scala media, and scala tympani
• Anterior, posterior, and lateral semicircular ducts

Q4. Which cochlear compartment is also called the cochlear duct?

• Scala vestibuli
• Scala tympani
• Vestibule
• Scala media

Q5. Which sensory organ for hearing lies within the cochlear duct?

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

Q6. Which membrane supports the organ of Corti?

• Vestibular membrane
• Tympanic membrane
• Basilar membrane
• Round window membrane

Q7. Which fluid fills the scala media?

• Cerebrospinal fluid only
• Endolymph
• Blood plasma
• Perilymph

Q8. Which fluid fills the scala vestibuli and scala tympani?

• Endolymph
• Synovial fluid
• Perilymph
• Lymph from cervical nodes

Q9. What is the helicotrema?

• The entrance to the internal acoustic meatus
• The receptor region of the semicircular duct
• The opening between the middle ear and auditory tube
• The apical communication between scala vestibuli and scala tympani

Q10. Which division of cranial nerve VIII carries auditory information from the cochlea?

• Vestibular nerve
• Cochlear nerve
• Glossopharyngeal nerve
• Facial nerve