Upgrade to remove ads
Only $35.99/year

Physiological Psych Exam 1

Terms in this set (44)

Which of the following people correctly localized the mind inside the skull?
Descartes
Which evidence would best support the notion that memory has a distributed representation in the brain?
The finding that damaging a given brain area interferes with one kind of memory while leaving others intact
An example of manipulating a behavioral variable to test its effects on a somatic variable would
Testing the effects of a sound stimulus on the response of an auditory neuron
A neuron is like a transistor because
Both represent information with electrical states
Information in a neuron flows
Dendrites --> Soma --> Axon
The technique which is best for visualizing an entire neuron with all of its processes is the
golgi stain
The technique which only labels neuron cell bodies is called
nissl stain
The technique which labels parts of neurons using radioactive antibodies to proteins of interests is known as
immunocytochemistry
Ion channels and other membrane proteins can be viewed with a light microscope
false
A synapse is where
A
Two neurons communicate
B
Chemical messengers are released
C
Information is transferred from one neuron to another
D
All of the above
CORRECT: D
Synaptic vesicles
Store neurotransmitter in the pre-synaptic neuron
Which of the following Glial cells is not correctly matched with its function?
Schwann cells - protect cell from debris and injury
A nerve is
A bundle of axons
Nerves are white because
They are myelinated
You are in the park and see an alligator. Your heart rate and breathing increase due to the effects of your ___ nervous system
Sympathetic
Relative to your ears, your nose is
rostral and medial
Lesions to your hippocampus would most likely cause problems with
memory
The plane which the corpus callosum passes through to connect the two hemisphere is
saggital
What are nerves made of?
axons
Which aspect of the PNS controls voluntary movement?
somatic
Rest and digest
parasympathetic
Gray matter is composed of ? while white matter is composed of ?
cell bodies, axons
Which fin on a shark sticks out of the water?
dorsal
What is an ion?
a charged atom or molecule which extra electrons or missing electrons
The electrical potential at which diffusion forces and electrostatic forces is called the
equlibrium potential
Opening K+ channels ??? membrane conductance to K+ and moves the membrane potential ??? to the equilibrium potential
increases, closer to
Opening Na+ channels in a neuron at rest will ??? the membrane
depolarize
The neuronal cell membrane
A
Is comprised of a lipid bilayer
B
Does not allow charged particles to pass through
C
Contains proteins
D
All of the above
CORRECT: D
Ionic gradients across the membrane are maintained by
Active transport
At equilibrium, chemical diffusion drives K+ ??? the cell, and electrical forces drive K+ ??? the cell
Out of, in to
At rest, the inside of a neuron is
Negative with respect to the outside
Opening sodium channels in a neuron at rest
Moves the membrane potential towards the sodium equilibrium potential thereby depolarizing the neuron
Action potentials
A
Permit neurons to transmit signals long distances
B
Travel down the axon
C
Are all-or-none events like the flushing of a toilet
D
All of these
CORRECT: D
What are the key channels for generation of the action potential?
voltage-gated sodium channels
A neurotransmitter antagonist
blocks or impedes the process of synaptic transmission
Ionotropic receptors
A
activate second messenger systems
B
do not contain ion channels
C
greatly magnify the effects of a small amount of neurotransmitter
D
none of the above
CORRECT: D
To minimize drug side effects, one should design drugs to
act on a single receptor sub-type of a one neurotransmitter system
Drugs have their effect on the brain by
enhancing or inhibiting synaptic transmission
Ways of enhancing the action of a neurotransmitter, or being a neurotransmitter agonist, include
A
blocking enzymatic breakdown the the transmitter in the synaptic cleft
B
blocking re-uptake of the neurotransmitter
C
mimicing the neurotransmitter and activating its post-synaptic receptors
D
all of the above
CORRECT: D
Methods of blocking synaptic transmission include
blocking V-gated Na+ channels
Ways of enhancing synaptic transmission include
A
mimicing naturally occuring neurotransmitters
B
blocking transmitter re-uptake
C
increasing number of post-synaptic receptors
D
all of the above
CORRECT: D
Alcohol
enhances GABA-ergic transmission
As I sit here wondering what it is all about, ??? rushes in and ??? rushes out.
sodium, potassium
The SSRI drugs work by
inhibiting re-uptake of serotonin
Students also viewed