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