Download Sample Midterm Exam

PSY 456 Summer 2008
Midterm 4
Name________________
Multiple choice questions, 2 pts each
1.
A.
B.
C.
D.
The insular cortex
is the first primary cortical processing area for taste
is the last area to receive taste information during the gustation process
processes information about the localization of painful stimuli
A&C
2. The sensory receptor neurons for the olfactory system are unusual in that
they are the only neurons we have that undergo continuous neurogenesis
throughout our lifespan. What is the life expectancy of an olfactory sensory
neuron?
A. 7 – 10 days
B. about 21 days
C. 6 – 8 weeks
D. 6 months
3. The odorant-binding olfactory receptor proteins, found on the cilia of olfactory
sensory neurons, are what type of receptor proteins?
A. ion channels
B. G-protein coupled receptors
C. metabotropic acetylcholine receptors
D. ionotropic receptors
4. If the axons from the olfactory sensory neurons are sheared off during a head
injury, what factor(s) will determine whether or not the sense of smell will be
restored?
A. whether or not the basal cells were destroyed
B. whether or not the cribriform plate is covered with scar tissue
C. whether or not the supporting cells were destroyed
D. A & B
5. Which of the sensory systems discussed in class is unusual because the
incoming sensory information does not make a synapse in the thalamus, and
also remains predominantly ipsilateral in the central nervous system?
A. gustatory system
B. olfactory system
C. somatosensory system
D. vestibular system
6. What makes taste receptor cells different from all other primary sensory
receptor cells?
A. they are replaced throughout our lifespan
B. they are neurons that don't have axons
C. they are not neurons, but are of epithelial cell origin
D. they are free nerve endings with no myelin
7. _______-tasting molecules are brought directly into taste receptor cells,
whereas _______-tasting molecules make contact with receptor molecules on
cell membranes, but don’t actually enter the cells.
A. Sweet; sour
B. Sour; salty
C. Bitter; sweet
D. Salty; bitter
8.
A.
B.
C.
D.
The "flavor" cortex is located where in the human brain?
the insula
occipital lobe
piriform cortex
orbitofrontal cortex
9. Information from which sensory modalities are combined in the "flavor" cortex
to give us our perception of the flavor of our food?
A. gustatory & olfactory information
B. texture & temperature information
C. visual information
D. information from the common chemical sense, plus all of the above
E. A, B & C only
10. Linda Bartoshuk coined the term "supertaster" to describe people who find
the taste of PROP paper to be extremely
A. bitter
B. salty
C. sour
D. sweet
11. Which of the following foods or beverages are supertasters not likely to eat
or drink?
A. alcoholic beverages
B. broccoli & cabbage
C. grapefruit juice
D. all of the above
12. How does the tongue of a supertaster differ from the tongue of a non-taster?
A. supertasters have more foliate papillae on their tongues than non-tasters do
B. non-tasters have no fungiform papillae on the tongue, supertasters have them
C. supertasters have many more fungiform papillae on the tongue than nontasters do
D. non-tasters have tiny taste buds on their tongues, supertasters have very
large taste buds on the tongue
13. Which of the basic taste modalities is missing in the cat? Is it missing in all
cats studied, or just in domestic cats?
A. bitter is missing in all cats studied
B. sour is missing in domestic cats only
C. sweet is missing in all cats studied
D. salty is missing in domestic cats only
(3 pts) What distinguishes a real synesthete from someone who sees colors
while hearing music during an LSD trip?
(4 pts) What theory does Ramachandran propose to explain graphemecolor
synesthesia?
(3 pts) What is a pseudogene? What two examples of pseudogenes did we
discuss in class?
(3 pts) List 3 ways in which olfactory sensory neurons are unique.
(4 pts) Is it commonly believed among the chemical senses community that
humans communicate using pheromones? What is the most convincing
evidence presented in lecture that humans are susceptible to pheromonal
signaling?
(4 pts) What are two examples of the common chemical sense combining with
olfaction to contribute to our sense of smell, and what are two other examples
of the common chemical sense combining with our sense of taste? (I'm looking
for specific types of odors or foods or drinks here)
(3 pts) What anatomical evidence supports the idea of the Proust Phenomenon?
EXTRA CREDIT (up to 2 pts) What is the retronasal pathway? What happens
there?