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Ear
Ear
7
Biology
9th Grade
06/16/2008

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Cards

Term
Main Components of the Ear
Definition
Outer
Middle
Inner
Central Auditory Nervous System
Term
What is an Auricle or Pinna?
Definition
Collects sound and directs it to the eardrum.
Term
What is the Tympanic Membrane?
Definition
Eardrum. Forms the boundary between outer and middle ear and vibrates in response to sound.
Term
What is in the Ossicular Chain?
Definition
Malleus (Hammer), Incus (Anvil), Stapes (Stirrup). These are the smallest bones in the body. They vibrate when the eardrum vibrates.
Term
What is a Cochlea?
Definition
Snail shaped organ with fluid filled tunnels; converts mechanical energy into electrical energy.
Term
What is a Vestibular System?
Definition
Consists of 3 semicircular canals and it shares the cochlea. It controls balance and takes no part in the hearing process.
Term
What are hair cells?
Definition
High pitch are at the base of the cochlea, low pitch at the apex.
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