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