WEEK 4 NRNP 6541 EAR. EXAM
QUESTIONS AND ANSWERS 100% PASS
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
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
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, 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? - 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 - ANS Possible hearing loss
Red flag: no single words by 1 year - ANS Possible hearing loss
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS AND ANSWERS 100% PASS
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
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
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, 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? - 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 - ANS Possible hearing loss
Red flag: no single words by 1 year - ANS Possible hearing loss
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
