Psychology 103 - Physiological Psychology » Spring 2022 » Chapter 4 Practice Quiz 1
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Question #1
"Reptilian stare" is sometimes used to describe the widely opened, unblinking eyes and motionless face of
A.
infancy.
B.
multiple sclerosis.
C.
Parkinson's disease.
D.
old age.
E.
Alzheimer's disease.
Question #2
Parkinson's disease is treated with
A.
serotonin.
B.
norepinephrine.
C.
acetylcholine.
D.
dopamine.
E.
L-dopa.
Question #3
A membrane potential is the difference in electrical charge between
A.
synapses and cell bodies.
B.
ganglia and nerves.
C.
nuclei and tracts.
D.
neuron membranes.
E.
the inside and outside of a cell.
Question #4
Salts in solution separate into positively and negatively charged
A.
crystals.
B.
ions.
C.
IPSPs.
D.
membrane potentials.
E.
EPSPs.
Question #5
Outside the membranes of resting neurons, there are many more
A.
nuclei.
B.
neurotransmitters.
C.
Na<sup>+</sup> ions.
D.
inhibitory neurotransmitters.
E.
K<sup>+</sup> ions.
Question #6
Ions pass through the neural membrane via specialized pores called
A.
ion channels.
B.
PSPs.
C.
connexons.
D.
vesicles.
E.
gap junctions.
Question #7
According to the theory of Hodgkin and Huxley,
A.
K<sup>+</sup> ions are continuously pumped out of a resting neuron.
B.
Na<sup>+</sup> ions are continuously pumped into a resting neuron.
C.
Na<sup>+</sup> ions continuously leak out of a resting neuron.
D.
K<sup>+</sup> ions continuously leak out of a resting neuron.
Question #8
Sodium-potassium pumps are
A.
transporters.
B.
excitatory.
C.
inhibitory.
D.
integrators.
E.
refractory.
Question #9
EPSPs are
A.
all of these
B.
transmitted decrementally.
C.
depolarizations.
D.
postsynaptic responses.
E.
graded responses.
Question #10
A change in the resting potential of a postsynaptic dendrite from -70 mV to -72 mV is called
A.
all of these
B.
a depolarization.
C.
an EPSP.
D.
an IPSP.
Question #11
How far do most postsynaptic potentials travel before they die out?
A.
no more than a couple of millimeters
B.
to the terminal buttons
C.
about 50 millimeters
D.
to the axon hillock
Question #12
Which of the following are membrane potentials?
A.
APs
B.
EPSPs
C.
IPSPs
D.
all of these
Question #13
Action potentials originate at the
A.
synapses.
B.
terminal buttons.
C.
nodes of Ranvier.
D.
axon initial segment, adjacent to the axon hillock.
E.
nucleus.
Question #14
A neuron normally fires when
A.
there is an EPSP.
B.
its buttons are stimulated.
C.
its sodium-potassium pumps are stimulated.
D.
there is an IPSP.
E.
the degree of depolarization on the axon adjacent to the hillock exceeds the threshold of excitation.
Question #15
APs are said to be all-or-none: This means that all Aps
A.
quickly or not at all.
B.
are the same.
C.
all of these
D.
in a particular neuron are the same.
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