#1
Which bone forms the majority of the external acoustic meatus?
Temporal bone
Sphenoid bone
Maxilla
Mandible
#2
Which of the following structures is NOT found in the external acoustic meatus?
Tympanic membrane
Ceruminous glands
Vestibular bulbs
Cilia
#3
What is the function of the external acoustic meatus?
To amplify sound waves
To protect the inner ear from foreign particles
To transmit sound waves to the inner ear
To maintain balance and equilibrium
#4
What is the scientific term for the eardrum?
Tympanic membrane
Cochlea
Vestibular membrane
Tectorial membrane
#5
Which of the following is a function of the external acoustic meatus?
Maintaining blood pressure
Filtering harmful substances
Balancing body temperature
Conducting sound waves
#6
What is the function of ceruminous glands in the external acoustic meatus?
To produce wax
To facilitate sound transmission
To detect sound vibrations
To protect against infection
#7
Which nerve innervates the skin of the external acoustic meatus?
Facial nerve (VII)
Glossopharyngeal nerve (IX)
Vagus nerve (X)
Trigeminal nerve (V)
#8
Which part of the temporal bone forms the posterior wall of the external acoustic meatus?
Mastoid process
Petrous part
Zygomatic process
Squamous part
#9
Which of the following structures is located at the medial end of the external acoustic meatus?
Malleus
Incus
Stapes
Tympanic membrane
#10
Which cranial nerve carries sensory information from the external acoustic meatus to the brain?
Trigeminal nerve (V)
Facial nerve (VII)
Glossopharyngeal nerve (IX)
Vestibulocochlear nerve (VIII)
#11
What is the function of cilia in the external acoustic meatus?
To produce cerumen
To detect sound vibrations
To protect against foreign particles
To facilitate sound transmission
#12
Which artery supplies blood to the external acoustic meatus?
Internal carotid artery
External carotid artery
Superior thyroid artery
Maxillary artery
#13
What condition can result from excessive cerumen production in the external acoustic meatus?
Tinnitus
Otitis externa
Cerumen impaction
Meniere's disease
#14
Which of the following bones does NOT contribute to the formation of the external acoustic meatus?
Temporal bone
Parietal bone
Occipital bone
Mandible
#15
Which part of the external acoustic meatus is responsible for cerumen production?
Cartilaginous portion
Bony portion
Innermost layer
External layer