Hearing Loss Ear Health 2

Question 1

Which part of the ear converts sound vibrations into electrical nerve signals?

Accepted Answer

The cochlea

Answer

The cochlea contains hair cells that transform fluid vibrations into nerve impulses sent to the brain.

Question 2

What is the most common preventable cause of permanent hearing loss worldwide?

Accepted Answer

Loud noise exposure

Answer

Prolonged or intense noise damages the delicate hair cells of the cochlea, which do not regenerate.

Question 3

Which of the following is a sign that earwax may be impacted?

Accepted Answer

A feeling of fullness and muffled hearing

Answer

Impacted earwax can block the canal, causing a plugged sensation, muffled hearing, and sometimes mild discomfort.

Question 4

What does the term 'tinnitus' refer to?

Accepted Answer

Ringing or buzzing in the ears

Answer

Tinnitus is the perception of sound, such as ringing or buzzing, without an external source.

Question 5

Inserting cotton swabs deep into the ear canal is discouraged mainly because it can:

Accepted Answer

Push wax deeper and damage the eardrum

Answer

Cotton swabs often pack wax further in and risk perforating the eardrum or scratching the canal.

Hearing Loss Practice Test