Exam 3

Question 1

place coding theory

Answer 1

pitch of sound determined by location of activated hair cells along basilar membrane of cochlea

Question 2

temporal coding theory

Answer 2

pitch of sounds determined by the rate of firing of auditory neurons

Question 3

Ossicles

Answer 3

Incus
Malleus
Stapes

Question 4

tympanic membrane

Answer 4

Ear drum
Partition between external ear and inner ear that vibrates with the same frequency as sound

Question 5

what part of the ear deals w/ balance?

Answer 5

inner

Question 6

Organ of Corti

Answer 6

located in scala media (of cochlea)
converts vibration of sound into neural activity

Question 7

ear canal

Answer 7

tube in outer ear from pinna to tympanic membrane
sound waves are funneled

Question 8

vomeronasal system

Answer 8

animals detect pheromones (secondary chemicals)
Utilizes separate receptor cells from those in the olfactory epithelium

Question 9

3 areas that olfactory information travels to the brain

Answer 9

hypothalamus
amygdala
thalamus

Question 10

olfactory receptor neurons

Answer 10

bipolar neurons

Question 11

cilia detect odorants through what receptor

Answer 11

metabotropic receptors

Question 12

where are olfactory receptors located

Answer 12

Olfactory epithelium

Question 13

2 subtypes of metabotropic receptors that combine for the perception of umami

Answer 13

T1R1 and T1R3

Question 14

How are salty tastes processed through taste receptor cells that detect sodium?

Answer 14

Ionotropic Receptors
Na+ enters —> depolarization —> Ca+2 —> neurotransmitter release

Question 15

Taste Bud

Answer 15

cluster of 50-150 taste receptor cells that detect taste
taste isn’t specific to 1 area of the tongue
each taste bud has 1 taste receptor cell

Question 16

circumvillate papillate location

Answer 16

back of tongue

Question 17

papillae

Answer 17

tiny bumps on tongue
contain taste buds
increase surface area