The Human Ear Flashcards
Whats the stimulus?
Sound waves.
Whats the receiver?
Ear.
Whats the transformer?
The cochlea.
Whats the conductor?
Auditory nerve.
Whats the analyzer?
Brain.
Whats the auricle and what does it do?
The outside part that we see and it captures the sound and directs it to the ear drum.
What is the auditory canal and what do the glands produce?
The tube in your ear leading to the ear drum and it secretes cereumen, (ear wax).
The auditory canal is lined with what to trap impurities?
Hairs.
What does the auditory canal do?
It funnels sound into the inner ear.
What is an ear drum and what does it do?
It’s a thin membrane that vibrates the ossicles.
Ear drums are very sensitive to what?
Pressure change.
At rest, the ear drum is _______.
Straight.
What are ossicles?
The 3 little bones/the smallest bones in the body.
Name the 3 ossicles.
1-Hammer
2-Anvil
3-Stirrup
How do the ossicles work together?
They vibrate together and make a domino effect to amplify the sound.
What is the cochlea?
It’s a tube that coils around itself and that is specialized with hair cells.
What does the cochlea DO?
It turns it into nerve impulses/electricity.
What helps you maintain your balance?
Semi-circular canals,(there are 3).
Where is the auditory nerve connected to? (Name 2 things).
To the cochlea and the semi-circular canals.
What does the auditory nerve do?
It sends the nerve impulses to the brain.
What can damage the ear? (Name 2 things).
Loud noises and objects that were inserted into the ear.
What does the cochlea contain?
Nerve endings essential for hearing.
What does the eustachian tube do?
It equalizes pressure on either side of the ear drum.
