#1
Which bone forms the majority of the external acoustic meatus?
Temporal bone
ExplanationTemporal bone forms the majority of the external acoustic meatus.
#2
Which of the following structures is NOT found in the external acoustic meatus?
Vestibular bulbs
ExplanationVestibular bulbs are not found in the external acoustic meatus.
#3
What is the function of the external acoustic meatus?
To transmit sound waves to the inner ear
ExplanationExternal acoustic meatus transmits sound waves to the inner ear.
#4
What is the scientific term for the eardrum?
Tympanic membrane
ExplanationTympanic membrane is the scientific term for the eardrum.
#5
Which of the following is a function of the external acoustic meatus?
Conducting sound waves
ExplanationConducting sound waves is a function of the external acoustic meatus.
#6
What is the function of ceruminous glands in the external acoustic meatus?
To produce wax
ExplanationCeruminous glands produce wax in the external acoustic meatus.
#7
Which nerve innervates the skin of the external acoustic meatus?
Facial nerve (VII)
ExplanationFacial nerve (VII) innervates the skin of the external acoustic meatus.
#8
Which part of the temporal bone forms the posterior wall of the external acoustic meatus?
Petrous part
ExplanationPetrous part of the temporal bone forms the posterior wall of the external acoustic meatus.
#9
Which of the following structures is located at the medial end of the external acoustic meatus?
Tympanic membrane
ExplanationTympanic membrane is located at the medial end of the external acoustic meatus.
#10
Which cranial nerve carries sensory information from the external acoustic meatus to the brain?
Vestibulocochlear nerve (VIII)
ExplanationVestibulocochlear nerve (VIII) carries sensory information from the external acoustic meatus to the brain.
#11
What is the function of cilia in the external acoustic meatus?
To protect against foreign particles
ExplanationCilia in the external acoustic meatus protect against foreign particles.
#12
Which artery supplies blood to the external acoustic meatus?
External carotid artery
ExplanationExternal carotid artery supplies blood to the external acoustic meatus.
#13
What condition can result from excessive cerumen production in the external acoustic meatus?
Cerumen impaction
ExplanationExcessive cerumen production can lead to cerumen impaction in the external acoustic meatus.
#14
Which of the following bones does NOT contribute to the formation of the external acoustic meatus?
Parietal bone
ExplanationParietal bone does not contribute to the formation of the external acoustic meatus.
#15
Which part of the external acoustic meatus is responsible for cerumen production?
Cartilaginous portion
ExplanationCartilaginous portion of the external acoustic meatus is responsible for cerumen production.