Beginner Cochlea Quiz

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

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

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

• Incus
• Modiolus
• Vestibule
• Promontory

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

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

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

• Vestibule
• Scala tympani
• Scala media
• Scala vestibuli

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

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

Q6. Which membrane supports the organ of Corti?

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

Q7. Which fluid fills the scala media?

• Endolymph
• Blood plasma
• Cerebrospinal fluid only
• Perilymph

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

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

Q9. What is the helicotrema?

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

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

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