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