About this Study Set
This study set covers Neuroscience through
18 practice questions.
An exploration of fundamental neurological structures, signaling mechanisms, and functional anatomy. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 18 questions from the
Core Principles of Neuroscience study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which specific ion is primarily responsible for the repolarization phase of an action potential by flowing out of the neuron?
-
A
Sodium (Na+)
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B
Potassium (K+)
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C
Calcium (Ca2+)
-
D
Chloride (Cl-)
2
The primary motor cortex is located in which specific gyrus of the frontal lobe?
-
A
Superior frontal gyrus
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B
Middle frontal gyrus
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C
Precentral gyrus
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D
Postcentral gyrus
3
Which glial cells are responsible for the myelination of axons within the central nervous system?
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A
Schwann cells
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B
Astrocytes
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C
Microglia
-
D
Oligodendrocytes
4
What is the primary excitatory neurotransmitter in the human central nervous system?
-
A
GABA
-
B
Glutamate
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C
Dopamine
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D
Serotonin
5
The Wernicke's area, essential for language comprehension, is typically located in which lobe of the brain?
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A
Frontal
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B
Parietal
-
C
Temporal
-
D
Occipital
6
Which structure serves as the primary relay station for sensory information (except olfaction) before it reaches the cerebral cortex?
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A
Hypothalamus
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B
Thalamus
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C
Basal ganglia
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D
Amygdala
7
What is the resting membrane potential of a typical mammalian neuron, measured in millivolts?
-
A
-70 mV
-
B
-30 mV
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C
0 mV
-
D
+30 mV
8
The blood-brain barrier is primarily maintained by the end-feet of which type of glial cell?
-
A
Oligodendrocytes
-
B
Ependymal cells
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C
Astrocytes
-
D
Microglia
9
Which cranial nerve is responsible for the parasympathetic innervation of the heart, lungs, and digestive tract?
-
A
Trigeminal nerve
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B
Facial nerve
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C
Vagus nerve
-
D
Hypoglossal nerve
10
What is the functional unit of the cerebellum that receives massive excitatory input from mossy fibers and climbing fibers?
-
A
Basket cell
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B
Purkinje cell
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C
Granule cell
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D
Stellate cell
11
Which neurotransmitter is most significantly depleted in the substantia nigra of patients with Parkinson's disease?
-
A
Acetylcholine
-
B
Dopamine
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C
Norepinephrine
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D
Glutamate
12
What phenomenon describes the strengthening of synapses based on recent patterns of activity, considered the cellular basis for learning?
-
A
Long-term depression (LTD)
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B
Long-term potentiation (LTP)
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C
Synaptic pruning
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D
Neural plasticity
13
The Broca's area is classically associated with which specific cognitive function?
-
A
Visual processing
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B
Auditory perception
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C
Speech production
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D
Executive decision-making
14
What is the term for the gaps in the myelin sheath where voltage-gated sodium channels are concentrated, allowing for saltatory conduction?
-
A
Synaptic clefts
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B
Dendritic spines
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C
Nodes of Ranvier
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D
Axon hillocks
15
Which part of the brain is most critical for the formation of new declarative memories?
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A
Hippocampus
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B
Amygdala
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C
Cerebellum
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D
Thalamus
16
What effect does the activation of GABA-A receptors have on a postsynaptic neuron?
-
A
Depolarization
-
B
Hyperpolarization
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C
Action potential firing
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D
Calcium influx
17
Which lobe of the cerebral cortex contains the primary visual cortex (V1)?
-
A
Frontal
-
B
Temporal
-
C
Parietal
-
D
Occipital
18
The 'limbic system' is a collection of structures involved in emotional regulation; which structure within it is primarily responsible for processing fear?
-
A
Cingulate gyrus
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B
Amygdala
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C
Fornix
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D
Septal nuclei
