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Week 4 NRNP 6541 ear Questions and
Correct Answers/ Latest Update / Already
Graded
Primary functions of the ear
Ans: Hearing and equilibrium (balance)
Why is early hearing detection critical in children?
Ans: Hearing loss affects speech, language, academic
performance, and socialization
When does embryonic ear development begin and complete?
Ans: Begins week 3 gestation; complete by 3rd month fetal life
Why are ear and kidney anomalies linked?
Ans: Ear and kidney develop during similar gestational periods;
malformation of one suggests the other
Three main ear structures
Ans: External, middle, and inner ear
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External ear components
Ans: Pinna (auricle), external auditory canal (EAC), tympanic
membrane (TM)
Function of cerumen
Ans: Lubricates canal, traps debris, antibacterial, acidic pH
inhibits pathogens
Middle ear structures
Ans: Ossicles (malleus, incus, stapes), oval window, round
window, eustachian tube
Function of ossicles
Ans: Transmit sound vibrations from TM to inner ear
Eustachian tube functions
Ans: Ventilates middle ear and drains secretions into
nasopharynx
Why are children prone to eustachian tube dysfunction?
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Ans: Tube is shorter, narrower, and more horizontal
Inner ear components
Ans: Cochlea (hearing) and semicircular canals (balance)
CN responsible for hearing and balance
Ans: Cranial nerve VIII (vestibulocochlear)
Key ear defense mechanisms
Ans: Cerumen, acidic pH, water-resistant lining, deep location
of inner ear
Common localized ear pathology
Ans: Infection, foreign body, trauma
Systemic conditions affecting ear function
Ans: Neurologic disorders, immune deficiency, congenital
anomalies
Red flag: newborn does not startle to loud noise
All rights reserved © 2025/ 2026 |
Week 4 NRNP 6541 ear Questions and
Correct Answers/ Latest Update / Already
Graded
Primary functions of the ear
Ans: Hearing and equilibrium (balance)
Why is early hearing detection critical in children?
Ans: Hearing loss affects speech, language, academic
performance, and socialization
When does embryonic ear development begin and complete?
Ans: Begins week 3 gestation; complete by 3rd month fetal life
Why are ear and kidney anomalies linked?
Ans: Ear and kidney develop during similar gestational periods;
malformation of one suggests the other
Three main ear structures
Ans: External, middle, and inner ear
All rights reserved © 2025/ 2026 |
, Page |2
External ear components
Ans: Pinna (auricle), external auditory canal (EAC), tympanic
membrane (TM)
Function of cerumen
Ans: Lubricates canal, traps debris, antibacterial, acidic pH
inhibits pathogens
Middle ear structures
Ans: Ossicles (malleus, incus, stapes), oval window, round
window, eustachian tube
Function of ossicles
Ans: Transmit sound vibrations from TM to inner ear
Eustachian tube functions
Ans: Ventilates middle ear and drains secretions into
nasopharynx
Why are children prone to eustachian tube dysfunction?
All rights reserved © 2025/ 2026 |
, Page |3
Ans: Tube is shorter, narrower, and more horizontal
Inner ear components
Ans: Cochlea (hearing) and semicircular canals (balance)
CN responsible for hearing and balance
Ans: Cranial nerve VIII (vestibulocochlear)
Key ear defense mechanisms
Ans: Cerumen, acidic pH, water-resistant lining, deep location
of inner ear
Common localized ear pathology
Ans: Infection, foreign body, trauma
Systemic conditions affecting ear function
Ans: Neurologic disorders, immune deficiency, congenital
anomalies
Red flag: newborn does not startle to loud noise
All rights reserved © 2025/ 2026 |
