BIOL 373 Special Senses Exam Questions with Correct Answers| Latest Update
Guaranteed Success
pathway for olfaction olfactory neuron --> cranial nerve I --> olfactory bulb --> olfactory tract
--> olfactory cortex --> cerebral cortex/limbic system
T/F: Olfactory information is relayed in the thalamus F --> goes directly to olfactory cortex
where do olfactory neurons synapse with secondary neurons? olfactory bulb
what type of neurons are ORNs? bipolar
where are odorant receptor proteins expressed? dendrites and non-motile cilia
layers of olfactory tissue (from outer to inner) olfactory epithelium, cribiform plate, bone
odorant receptor proteins are what type of protein? GPCR
how may ORPs are expressed on one ORN? one
T/F: each receptor can recognize >1 odorant T
T/F: each odorant can stimulate >1 receptor T
which cells are replaced faster: ORNs or TRCs? TRCs
T/F: certain tastes are localized to specific areas on the tongue F - all areas of the tongue are
sensitive to each of the five senses
, which tastes trigger the release of ATP? sweet, umami, bitter
influx of which cation depolarizes TRCs? Ca
what type of protein are TRs? GPCR
which tastes are poorly understood? sour and salty
taste pathway TRC --> primary neuron (part of cranial nerve VII, IX, X) --> medulla -->
thalamus --> gustatory cortex
what type of receptors are hair cells? mechanoreceptors
do the bending of hair cells open or close cation channels? both
what component of the sound wave creates pitch? frequency
what component of the sound wave creates volume? amplitude
what unit is sound volume (intensity) measured? decibels
which ossicle connects to the oval window? stapes
audition pathway tympanic membrane --> bony ossicles --> oval window --> vestibular duct -
-> cochlear duct --> tympanic duct --> round window
Guaranteed Success
pathway for olfaction olfactory neuron --> cranial nerve I --> olfactory bulb --> olfactory tract
--> olfactory cortex --> cerebral cortex/limbic system
T/F: Olfactory information is relayed in the thalamus F --> goes directly to olfactory cortex
where do olfactory neurons synapse with secondary neurons? olfactory bulb
what type of neurons are ORNs? bipolar
where are odorant receptor proteins expressed? dendrites and non-motile cilia
layers of olfactory tissue (from outer to inner) olfactory epithelium, cribiform plate, bone
odorant receptor proteins are what type of protein? GPCR
how may ORPs are expressed on one ORN? one
T/F: each receptor can recognize >1 odorant T
T/F: each odorant can stimulate >1 receptor T
which cells are replaced faster: ORNs or TRCs? TRCs
T/F: certain tastes are localized to specific areas on the tongue F - all areas of the tongue are
sensitive to each of the five senses
, which tastes trigger the release of ATP? sweet, umami, bitter
influx of which cation depolarizes TRCs? Ca
what type of protein are TRs? GPCR
which tastes are poorly understood? sour and salty
taste pathway TRC --> primary neuron (part of cranial nerve VII, IX, X) --> medulla -->
thalamus --> gustatory cortex
what type of receptors are hair cells? mechanoreceptors
do the bending of hair cells open or close cation channels? both
what component of the sound wave creates pitch? frequency
what component of the sound wave creates volume? amplitude
what unit is sound volume (intensity) measured? decibels
which ossicle connects to the oval window? stapes
audition pathway tympanic membrane --> bony ossicles --> oval window --> vestibular duct -
-> cochlear duct --> tympanic duct --> round window
