flynn 2

Question 1

parts of the ear

Answer 1

pinna (inside ear)
helix (tip of ear)
concha
maieeus
inchus, stapes, cochlea, tympanic membrane (eardrum)
eustachian tube
vestibular and cochlear nerve (up then down)
tympanic cavity
round window
external/auditory canal

Question 2

what does the pinna do

Answer 2

Aids in sound localization by helping identify the source of the sound through subtle timing and amplitude differences.

Question 3

sound localization involves two factors:

Answer 3

timing and amplitude

Question 4

Timing:
Amplitude:

Answer 4

Detects the time difference in sound arrival between ears, crucial for determining direction.

Differentiates the sound intensity reaching each ear to aid in spatial orientation.

Question 5

auditory ossicles make up what 3 parts of the ear

Answer 5

middle ear, malleus, stapes, incus

Question 6

function of auditory ossicles

Answer 6

transmit soundwaves to inner ear
amplify the signal
protect inner ear by reducing excessive vibrations

Question 7

Tensor Tympani Muscle:
Pulls the malleus ____.
Active during ____ stabilizing sound perception.

Answer 7

tensor tympani, medially, chewing

Question 8

Stapedius Muscle:
Pulls the stapes ____.
Engaged during ____ to reduce ____ noise.

Answer 8

stapedius, laterally, talking, self generated

Question 9

____ Reflex: Both muscles work together to protect the inner ear from loud noises by reducing ossicle movement, which ones?

Answer 9

acoustic, stapeidus and tympani

Question 10

Transmission of Energy:
Converts ____ from the ____ ear into ____ energy in the ____ fluid.

Answer 10

mechanical energy, middle, hydraulic, cochlear

Question 11

Frequency Distribution:
Different frequencies stimulate specific areas of the cochlea. This is known as ____.

Answer 11

tonotopic organization

Question 12

Neural signals are processed and mapped in the auditory cortex. This is ____

Answer 12

frequency mapping

Question 13

____ cells within the ____ detect movement in the fluid caused by sound vibrations.

These movements open ____, leading to ____ signals sent to the brain.

Answer 13

hair, cochlea

ion channels, neural

Question 14

____.
Responsible for detecting rotational movements of the head.

Mechanism:
____ inside the canals moves when the ____ rotates.
Movement disrupts hair cells, generating neural signals.

Answer 14

semicircular canals

fluid, head

Question 15

Otolith Organs

Detect linear acceleration and ____ relative to gravity.
Comprised of:
____: Detects horizontal movements.
____: Detects ____ movements.

Answer 15

head position, utricle, saccule, vertical