nsci100 exam 2 practice quizzes

Question 1

things often appear very “blueish” under conditions of low light because
a. they must have a blue-colored light shining on them
b. rods are maximally sensitive to blue wavelengths of light
c. blue cones work better in low light than red or green cones
d. it is actually the color of the background that changes in dim light

Answer 1

rods are maximally sensitive to blue wavelengths of light

Question 2

which of the following is true regarding sensory systems
a. our senses always provide an accurate measurement of things in our environment
b. different individuals, even within a species, can vary in whether they are able to detect something with one of their senses
c. the analog nature of real-world energy is preserved in the nervous system
d. although different species can vary in their sensory abilities, all members of one species have the same sensory sensitivity

Answer 2

different individuals, even within a species, can vary in whether they are able to detect something with one of their senses

Question 3

which of the following is not a way in which rods and cones in the retina differ from each other
a. being connected to bipolar cells
b. amount of sensitivity to light
c. location within the retina
d. acuity
e. involvement in color vision

Answer 3

being connected to bipolar cells

Question 4

if a man has a gene that results in no functional green cones being produced, then
a. he will have normal color vision
b. he will have a very poor ability to make out objects in low light
c. he will confuse shades of red and green with each other
d. he will see green normally, but not red
e. he will see red normally, but not green

Answer 4

he will confuse shades of red and green with each other

Question 5

voltage-gated sodium channels at the start of an axon are triggered to open by the membrane potential
a. disappearing completely
b. reaching -80 mV
c. becoming more positive
d. reaching exactly zero

Answer 5

becoming more positive

Question 6

which of the following is a way in which the dendrites and axon of a neuron are similar
a. both can sometimes have their membrane potential go from -70 mV to -60 mV
b. both are sometimes wrapped in myelin
c. electrical signals are transmitted in an all-or-none fashion for both
d. both involve transmission of electrical signals toward the cell body

Answer 6

both can sometimes have their membrane potential go from -70 mV to -60 mV

Question 7

which of the following is involved the earliest in taste perception
a. taste bud
b. solitary nucleus
c. thalamus
d. insula

Answer 7

taste bud

Question 8

which of the following interacts with T1R2/T1R3 receptor?
a. salt
b. artificial sweeteners
c. sour compounds
d. bitter compounds

Answer 8

artificial sweeteners

Question 9

prosopagnosia involves an inability to
a. distinguish red from green
b. recognize faces
c. tell where your body parts are
d. feel pain

Answer 9

recognize faces

Question 10

which of the following cells in the visual system have center-surround receptive fields?
a. cells in the fusiform face area
b. rods
c. cells in striate cortex
d. ganglion cells

Answer 10

ganglion cells

Question 11

which of the following is a distinction between the chemical senses and vision
a. whether G-proteins can be involved
b. whether there is a physical dimension or continuous variable to describe all sensory stimuli
c. whether there are receptor cells that release neurotransmitter
d. whether individuals can vary in their sensitivity to particular stimuli

Answer 11

whether there is a physical dimension or continuous variable to describe all sensory stimuli

Question 12

which of the following is true regarding your body’s sense of temperature?
a. your perception of temperature provides an accurate gauge of the warmth or coolness of the thing that you touch
b. it always stays constant, as long as the temperature of the object being felt stays constant
c. your perceptions of warmth on a patch of skin depend on the cortex being raised to that same temperature
d. it originates from free nerve endings in your skin

Answer 12

it originates from free nerve endings in your skin

Question 13

which of the following is not true about the parvocellular visual system?
a. it is color sensitive
b. it works poorly in dim light
c. it receives input primarily from the outer, peripheral part of the retina
d. it receives input from cones

Answer 13

it receives input primarily from the outer, peripheral part of the retina

Question 14

supertasters are more sensitive to both spicy foods and bitter taste than are nontasters. this is because nontasters
a. only taste bitter on the back of their tongue
b. have more T2R proteins
c. have a broken TRPV1 receptor
d. have a lower density of fungiform taste papillae

Answer 14

have a lower density of fungiform taste papillae

Question 15

for which of the following regions of the body do you have the greatest ability to discriminate exactly which part of it was touched?
a. hand
b. trunk
c. post central gyrus
d. hip

Answer 15

hand

Question 16

the TRPV1 channel is important for all of the following sensations except
a. warmth
b. the spiciness of chili peppers
c. pressure on the skin
d. pain

Answer 16

pressure on the skin

Question 17

every part of the tongue
a. responds to bitter chemicals
b. is connected directly to the thalamus
c. sends a signal via the facial nerve
d. has circumvallate papillae

Answer 17

responds to bitter chemicals

Question 18

a rapidly adapting somatosensory receptor
a. always provides an accurate representation of the temperature of the skin
b. starts responding when a stimulus is applied and keeps responding as long as it is present
c. responds only when a stimulus is removed
d. signals moments when there is a change in the status of the skin

Answer 18

signals moments when there is a change in the status of the skin

Question 19

a person who feels pain when their skin is lightly touched should be diagnosed with
a. allodynia
b. hyperalgesia
c. congenital insensitivity to pain
d. chronic pain

Answer 19

allodynia

Question 20

Which of the following pairs of sensory stimuli are often confused with each other because they both cause the same response in the later stages of sensory processing?
a. damage to the bladder & damage to the skin on the chest
b. artificial sweetener and sugar
c. the leaves & flowers of a poinsettia plant in someone who is NOT red-green colorblind
d. menthol & an increase in temperature

Answer 20

artificial sweetener and sugar

Question 21

Each glomerulus in the olfactory bulb receives input from how many different kinds of olfactory receptors?
a. 1
b. 5
c. 350
d. 3

Answer 21

1

Question 22

Which of the following involves G-proteins in transduction?
a. touch
b. bitter taste
c. salty taste
d. pain

Answer 22

bitter taste

Question 23

Which of the following involves the most kinds of sensory receptors?
a. color vision
b. the spiciness of chili peppers
c. sweet taste
d. bitter taste

Answer 23

bitter taste

Question 24

Women tend to be more sensitive than men to
a. ultraviolet light that is not detected by photoreceptors
b. odors that they have been exposed to previously
c. all odors
d. odors that are smelled for the first time

Answer 24

odors that they have been exposed to previously

Question 25

Vibrations in the skin are detected by
a. Pacinian corpuscles
b. free nerve endings
c. bulbous corpuscles
d. T2Rs

Answer 25

pacinian corpuscles

Question 26

A person who is able to smell but has distorted perceptions of odors should be diagnosed with
a. anomsia
b. paromsia
c. allodynia
d. phantosmia
e. hyposmia

Answer 26

paromsia

Question 27

Which lobe of cortex includes a “where” visual system important for detecting object location and movement?
a. parietal
b. insula
c. frontal
d. occipital
e. temporal

Answer 27

parietal

Question 28

Which of the following is true about the magnocellular visual system?
a. it receives input primarily from cones
b. it receives input primarily from the peripheral retina
c. it is highly sensitive to color
d. it works poorly in dim light

Answer 28

it receives input primarily from the peripheral retina

Question 29

Neurons that respond especially well to the sight of faces are found in the
a. striate cortex
b. temporal lobe
c. parietal lobe
d. ventral posterior thalamus

Answer 29

temporal lobe

Question 30

Neurons in the right occipital lobe are sensitive to light that is shined on
a. the optic chiasm
b. the right visual field for each eye
c. all parts of the left eye
d. the left visual field for each eye
e. all parts of the right eye

Answer 30

the left visual field for each eye

Question 31

What is a likely consequence of damage to the inferior temporal lobe?
a. inabilty to perceive motion
b. inability to feel pain
c. complete blindness for half of the world
d. visual agnosia

Answer 31

visual agnosia

Question 32

The retina does NOT project directly to
a. the superior colliculus
b. V1
c. the lateral geniculate nucleus
d. the suprachiasmatic nucleus
e. the thalamus

Answer 32

V1

Question 33

people with “blindsight”
a. are faking when they say they cannot see something
b. have damage to the superior colliculus
c. can unconsciously orient toward things in their environment
d. can see objects but not recognize what they are

Answer 33

can unconsciously orient toward things in their environment

Question 34

For which of the following does transduction take place in a cell that is a neuron?
a. olfaction
b. vision
c. hearing
d. taste

Answer 34

olfaction

Question 35

the organ of Corti
a. is one of the three bones found in the middle ear
b. projects to the olfactory bulb
c. is where auditory transduction takes place
d. is stimulated by the parasympathetic nervous system

Answer 35

is where auditory transduction takes place

Question 36

Which of the following responds differently to different frequencies of sound waves?
a. tectorial membrane
b. orbitofrontal cortex
c. basilar membrane
d. fungiform papillae

Answer 36

basilar membrane

Question 37

A tonotopic map is found in
a. the insula
b. the basilar membrane
c. secondary auditory cortex
d. V1

Answer 37

the basilar membrane

Question 38

The cochlea is found in
a. the retina
b. the inner ear
c. the nose
d. the middle ear

Answer 38

the inner ear

Question 39

Vision and hearing differ on
a. whether they can be used to determine the identity of a person that you are interacting with
b. which cortical lobe first receives the sensory information
c. A table of answers and brief statistics regarding student answer choices. Answer Text Number of Respondents Percent of respondents selecting this answer Answer Distribution whether they are represented in the posterior parietal cortex for determining an object’s location, (Incorrect answer)whether they are represented in the posterior parietal cortex for determining an object’s location
d. whether there is a transduction event in the periphery

Answer 39

which cortical lobe first receives the sensory information