Hearing Flashcards
1
Q
External ear
A
Pinna or auricle
Focus sound and detect direction
Acoustic cannel
Ear drum…
2
Q
Middle ear
A
Ossicles, ear bones Transmit sound waves to cochlea Protection! Auditory tube, can get plugged up with a cold. ...
3
Q
Inner ear
A
Cochlea, sight of sound transduction
4
Q
Cochlea
A
Organ of corti
5
Q
Hair cells
A
Receptors sensitive to mechanical disturbance.
6
Q
Inner hair cells
A
Hearing
7
Q
Outer hair cells
A
Ajustument
8
Q
Sounds
A
Waves moving through medium
Frequency, distance between the peaks.
Measured in hertz, pitch
Transducer by location in basilar membrane.
Amplitude, energy of waves
Measured in decibels
Transducer by number of hair cells distorted
9
Q
Hearing philosophy
A
Volume based on the strength of distortion. Pitch detected due to location of distortion. Flexibility of Basler membrane. Rigidity results in hearing loss
10
Q
Neural pathways
A
Cochlear nerve, VIII Medulla Inferior colliculi Thalamus (MGN) Auditory cortex
11
Q
Cochlea inplants
A
Implants for the deaf
