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Chpt 6: B
Pig Disection: Sensory Organs
12
Biology
12th Grade
03/04/2013

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Term
Inner ear
Definition
Part of the ear with receptive cells lying within fluid filled sacs and ducts. It is made of semicircular ducts, utriculus, and sacculus and it related to ones sense of equilibrium.
Term
External and Middle ear
Definition
Parts of the ear that gather and amplify the airborne sound waves sufficiently and generate pressure waves in the cochlear liquid
Term
Auricle
Definition
Large flap of the ear that gathers and focuses sound waves on the eardrum
Term
External Acoustic Meatus
Definition
The canal extending ventrally and medially from the base of the auricle to the eardrum to tympanic membrane
Term
Tympanic Membrane
Definition
Another name for the eardrum; it separates the external ear from the middle ear
Term
Tympanic Cavity
Definition
Large cavity of the middle ear
Term
Auditory Ossicles
Definition
Three small bones that transmit movements of the tympanic membrane to the inner ear
Term
Auditory tube
Definition
Tube that opens into the nasal pharynx. It is also called the Eustachian tube. It permits the equalization of pressure on each side of the tympanic membrane
Term
Malleus, Incus, Stapes
Definition
The names of the three auditory ossicles. They help carry sound
Term
Fenestra Vestibuli
Definition
The oval window in the wall of the tympanic cavity
Term
Fenestra Cochleae
Definition
A round window ventral and posterior to the fenestra vestibule. It is where the pressure waves are released back into the tympanic cavity
Term
Cochlea
Definition
Spiral part of the inner ear of mammals
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