Download Name: ______ Period: ____ Causes and Types of Hearing Loss: 1

Name: __________
Period: ____
Causes and Types of Hearing Loss:
1. With normal hearing, ________________sound waves travel
down the ear canal and strike the ___________eardrum.
2. The eardrum attached to ____ 3 tiny bones in the middle ear.
3. The last bone the ______pushes on a fluid filled chamber
called the _____________cochlea. The fluid causes sensitive
hair cells to bend that generates an electrical signal that is
_________to the brain
4. Things that can damage hearing are _______, ________,
____________, or repeated _______________________.
age, disease, injury or repeated exposure to loud noises
5. Conductive hearing loss is caused by:
__________________________________________________
__________________________________________________
__________________________________________________
mechanical problem in the ear canal or middle ear that blocks
the conduction of sound
6. Sensorineural hearing loss is caused by:
__________________________________________________
__________________________________________________
__________________________________________________
caused by damage to the inner ear, auditory newrve or auditory
nerve pathways in the brain
How to Test Hearing:
7. Sound waves are gathered at the (outer) ____________ ear
and are channeled into the ___________ (middle) ear.
8. Sound waves hit the ________________tympanic
membrane or known as the _________________ear drum.
9. The vibrations travel from the middle ear into the
_____________ fluid filled middle ear known as the cochlea.
10. There they are converted to __________ signals which are
sent to the brain.
11. Who performs tests on a person’s hearing?
___________________________ audiologist
___________________________ hearing specialist
12. What is used to perform these tests?
________________ electronic equipment
________________ tuning fork
13. The test that uses the tuning fork is called a
_____________ Rinne test.
14. When the fork is struck it makes what kind of sound? _____
musical
15. It is held near the ____ ear but does not touch the ear or
head. This tests to see if the sound waves travel through the
middle ear to the __________ cochlea.
16. The tuning fork is also struck and held ______ behind the
ear on the ______ skull.
17. This part of the test focuses on the _____________
vibrations received by the cochlea via _________ bone
conduction.
18. This test combined with ____________ speech testing
allows the audiologist to determine whether a hearing
impairment _____ exists and what the ____________ cause
may be.