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.
old age.
B.
Alzheimer's disease.
C.
infancy.
D.
Parkinson's disease.
E.
multiple sclerosis.
Question #2
Parkinson's disease is treated with
A.
serotonin.
B.
dopamine.
C.
norepinephrine.
D.
L-dopa.
E.
acetylcholine.
Question #3
A membrane potential is the difference in electrical charge between
A.
ganglia and nerves.
B.
the inside and outside of a cell.
C.
synapses and cell bodies.
D.
neuron membranes.
E.
nuclei and tracts.
Question #4
Salts in solution separate into positively and negatively charged
A.
crystals.
B.
EPSPs.
C.
ions.
D.
membrane potentials.
E.
IPSPs.
Question #5
Outside the membranes of resting neurons, there are many more
A.
Na<sup>+</sup> ions.
B.
inhibitory neurotransmitters.
C.
K<sup>+</sup> ions.
D.
nuclei.
E.
neurotransmitters.
Question #6
Ions pass through the neural membrane via specialized pores called
A.
vesicles.
B.
connexons.
C.
ion channels.
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.
Na<sup>+</sup> ions are continuously pumped into a resting neuron.
C.
K<sup>+</sup> ions continuously leak out of a resting neuron.
D.
K<sup>+</sup> ions are continuously pumped out of a resting neuron.
Question #8
Sodium-potassium pumps are
A.
inhibitory.
B.
refractory.
C.
excitatory.
D.
integrators.
E.
transporters.
Question #9
EPSPs are
A.
all of these
B.
postsynaptic responses.
C.
graded responses.
D.
depolarizations.
E.
transmitted decrementally.
Question #10
A change in the resting potential of a postsynaptic dendrite from -70 mV to -72 mV is called
A.
an EPSP.
B.
all of these
C.
an IPSP.
D.
a depolarization.
Question #11
How far do most postsynaptic potentials travel before they die out?
A.
about 50 millimeters
B.
to the axon hillock
C.
to the terminal buttons
D.
no more than a couple of millimeters
Question #12
Which of the following are membrane potentials?
A.
APs
B.
all of these
C.
IPSPs
D.
EPSPs
Question #13
Action potentials originate at the
A.
synapses.
B.
terminal buttons.
C.
nucleus.
D.
nodes of Ranvier.
E.
axon initial segment, adjacent to the axon hillock.
Question #14
A neuron normally fires when
A.
its sodium-potassium pumps are stimulated.
B.
there is an IPSP.
C.
its buttons are stimulated.
D.
there is an EPSP.
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.
all of these
B.
quickly or not at all.
C.
are the same.
D.
in a particular neuron are the same.
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