1
PRINCIPLES OF NEUROSCIENCE | BSCI 353 FULL
PACKAGE QUESTIONS ANSWERS AND
RATIONALES 2026-27 LATEST UPDATED VERSION
INSTANT DOWNLOAD PDF..!!
INTRODUCTION
The BSCI 353 Principles of Neuroscience course at the University of
Maryland is a comprehensive exploration of the cellular and
molecular foundations of the nervous system, serving as a nexus of
chemistry, physics, and biology . This rigorous course equips students
with an understanding of how individual neurons and neural
networks function as variable electrical circuits, how sensory systems
transduce signals from the external world, and how neural plasticity
enables learning and memory . The curriculum integrates
foundational concepts in membrane biophysics, synaptic
transmission, sensory transduction, and synaptic plasticity,
emphasizing the experimental techniques used to study the nervous
system . This question bank contains 150 advanced, exam-style
questions that mirror the content, difficulty, and application-level
format of the actual BSCI 353 examinations, including the integration
of experimental design and data interpretation. Each question
includes a detailed rationale explaining the correct answer and why
other options are incorrect. With this resource, you will identify
knowledge gaps, build confidence, and develop the test-taking
strategies needed to succeed in this challenging course.
CORE DOMAINS TESTED
1. Cellular Neurophysiology – Membrane potential, ion channels,
Nernst equation, Goldman equation, action potential
,2
generation and propagation, voltage-clamp and patch-clamp
techniques, and Hodgkin-Huxley model .
2. Synaptic Transmission – Chemical synapses, neurotransmitter
release, quantal release (MEPPs/EPPs), SNARE proteins, vesicle
recycling, synaptic summation, and receptor types (ionotropic
vs. metabotropic) .
3. Neurotransmitters and Receptors – Synthesis, storage, release,
reuptake, and degradation of neurotransmitters; ionotropic
receptors (AMPA, NMDA, GABA_A, nicotinic ACh);
metabotropic receptors (mGluRs, GABA_B, muscarinic ACh,
dopamine receptors) .
4. Sensory Systems – Visual system: photoreceptors, bipolar cells,
ganglion cells, center-surround receptive fields, lateral
inhibition, parallel processing (magnocellular, parvocellular,
koniocellular pathways) .
– Auditory system: hair cell transduction, basilar membrane
tonotopy, endolymph composition, and frequency tuning .
5. Synaptic Plasticity and Learning – Habituation, sensitization in
Aplysia, Long-Term Potentiation (LTP), NMDA receptor role,
AMPA receptor trafficking, and Morris water maze
experiments .
6. Experimental Methods – Voltage-clamp, patch-clamp (cell-
attached, whole-cell, inside-out, outside-out configurations),
and neuronal labeling techniques (Golgi, Nissl, GFP) .
QUESTIONS 1-100
,3
Q1: If a bullet damaged the hippocampus, what brain function
would be most likely impaired?
A) Vision
B) Hearing
C) Movement
D) Spatial memory
Rationale: The correct answer is D. The hippocampus is critical for
spatial memory formation. Damage to the hippocampus impairs the
ability to navigate and remember locations, as demonstrated in
Morris water maze experiments. Option A is incorrect because the
lateral geniculate nucleus (LGN) is the primary visual relay. Option B
is incorrect because the oval window is involved in hearing. Option C
is incorrect because the basal ganglia are primarily involved in
movement control.
Q2: Astrocytes take up which ion from the extracellular space
around neurons to prevent spontaneous action potentials?
A) Sodium
B) Potassium
C) Chloride
D) Calcium
Rationale: The correct answer is B. Astrocytes take up potassium ions
from the extracellular space around neurons. Neurons lose potassium
during every action potential, and extracellular potassium
concentration determines the resting membrane potential. By
removing excess potassium, astrocytes prevent neuronal
depolarization and spontaneous action potential generation .
Q3: Why would you need to use calcium-sensitive dye imaging
rather than fMRI to determine whether a particular individual
neuron in the visual cortex responds to a colored stimulus?
, 4
A) fMRI cannot be used in monkeys
B) fMRI lacks the spatial resolution to image individual neurons
C) Calcium-sensitive dyes are less invasive
D) fMRI cannot detect color processing
Rationale: The correct answer is B. fMRI measures hemodynamic
responses (blood oxygen level-dependent signals) and cannot resolve
activity at the single-neuron level. Calcium-sensitive dye imaging
allows visualization of individual neuron activity with cellular
resolution .
Q4: Why do action potentials not degrade over time as they
propagate down an axon, unlike graded potentials?
A) Voltage-gated sodium channels open at each point along the
axon to regenerate the signal
B) The axon is insulated by myelin sheaths only
C) Action potentials are actively transported
D) The axon conducts signals faster than graded potentials
Rationale: The correct answer is A. Action potentials are regenerated
at every point along the axon because voltage-gated sodium
channels open and contribute to depolarization. This ensures the
signal does not degrade over distance .
Q5: A neuronal cell body has only voltage-gated sodium
conductance and leakage chloride conductance. At rest, voltage-
gated sodium channels are closed. The equilibrium potential for
sodium is +50 mV and for chloride is -60 mV. What is the resting
membrane potential?
A) -60 mV
B) +50 mV
C) 0 mV
D) -70 mV
PRINCIPLES OF NEUROSCIENCE | BSCI 353 FULL
PACKAGE QUESTIONS ANSWERS AND
RATIONALES 2026-27 LATEST UPDATED VERSION
INSTANT DOWNLOAD PDF..!!
INTRODUCTION
The BSCI 353 Principles of Neuroscience course at the University of
Maryland is a comprehensive exploration of the cellular and
molecular foundations of the nervous system, serving as a nexus of
chemistry, physics, and biology . This rigorous course equips students
with an understanding of how individual neurons and neural
networks function as variable electrical circuits, how sensory systems
transduce signals from the external world, and how neural plasticity
enables learning and memory . The curriculum integrates
foundational concepts in membrane biophysics, synaptic
transmission, sensory transduction, and synaptic plasticity,
emphasizing the experimental techniques used to study the nervous
system . This question bank contains 150 advanced, exam-style
questions that mirror the content, difficulty, and application-level
format of the actual BSCI 353 examinations, including the integration
of experimental design and data interpretation. Each question
includes a detailed rationale explaining the correct answer and why
other options are incorrect. With this resource, you will identify
knowledge gaps, build confidence, and develop the test-taking
strategies needed to succeed in this challenging course.
CORE DOMAINS TESTED
1. Cellular Neurophysiology – Membrane potential, ion channels,
Nernst equation, Goldman equation, action potential
,2
generation and propagation, voltage-clamp and patch-clamp
techniques, and Hodgkin-Huxley model .
2. Synaptic Transmission – Chemical synapses, neurotransmitter
release, quantal release (MEPPs/EPPs), SNARE proteins, vesicle
recycling, synaptic summation, and receptor types (ionotropic
vs. metabotropic) .
3. Neurotransmitters and Receptors – Synthesis, storage, release,
reuptake, and degradation of neurotransmitters; ionotropic
receptors (AMPA, NMDA, GABA_A, nicotinic ACh);
metabotropic receptors (mGluRs, GABA_B, muscarinic ACh,
dopamine receptors) .
4. Sensory Systems – Visual system: photoreceptors, bipolar cells,
ganglion cells, center-surround receptive fields, lateral
inhibition, parallel processing (magnocellular, parvocellular,
koniocellular pathways) .
– Auditory system: hair cell transduction, basilar membrane
tonotopy, endolymph composition, and frequency tuning .
5. Synaptic Plasticity and Learning – Habituation, sensitization in
Aplysia, Long-Term Potentiation (LTP), NMDA receptor role,
AMPA receptor trafficking, and Morris water maze
experiments .
6. Experimental Methods – Voltage-clamp, patch-clamp (cell-
attached, whole-cell, inside-out, outside-out configurations),
and neuronal labeling techniques (Golgi, Nissl, GFP) .
QUESTIONS 1-100
,3
Q1: If a bullet damaged the hippocampus, what brain function
would be most likely impaired?
A) Vision
B) Hearing
C) Movement
D) Spatial memory
Rationale: The correct answer is D. The hippocampus is critical for
spatial memory formation. Damage to the hippocampus impairs the
ability to navigate and remember locations, as demonstrated in
Morris water maze experiments. Option A is incorrect because the
lateral geniculate nucleus (LGN) is the primary visual relay. Option B
is incorrect because the oval window is involved in hearing. Option C
is incorrect because the basal ganglia are primarily involved in
movement control.
Q2: Astrocytes take up which ion from the extracellular space
around neurons to prevent spontaneous action potentials?
A) Sodium
B) Potassium
C) Chloride
D) Calcium
Rationale: The correct answer is B. Astrocytes take up potassium ions
from the extracellular space around neurons. Neurons lose potassium
during every action potential, and extracellular potassium
concentration determines the resting membrane potential. By
removing excess potassium, astrocytes prevent neuronal
depolarization and spontaneous action potential generation .
Q3: Why would you need to use calcium-sensitive dye imaging
rather than fMRI to determine whether a particular individual
neuron in the visual cortex responds to a colored stimulus?
, 4
A) fMRI cannot be used in monkeys
B) fMRI lacks the spatial resolution to image individual neurons
C) Calcium-sensitive dyes are less invasive
D) fMRI cannot detect color processing
Rationale: The correct answer is B. fMRI measures hemodynamic
responses (blood oxygen level-dependent signals) and cannot resolve
activity at the single-neuron level. Calcium-sensitive dye imaging
allows visualization of individual neuron activity with cellular
resolution .
Q4: Why do action potentials not degrade over time as they
propagate down an axon, unlike graded potentials?
A) Voltage-gated sodium channels open at each point along the
axon to regenerate the signal
B) The axon is insulated by myelin sheaths only
C) Action potentials are actively transported
D) The axon conducts signals faster than graded potentials
Rationale: The correct answer is A. Action potentials are regenerated
at every point along the axon because voltage-gated sodium
channels open and contribute to depolarization. This ensures the
signal does not degrade over distance .
Q5: A neuronal cell body has only voltage-gated sodium
conductance and leakage chloride conductance. At rest, voltage-
gated sodium channels are closed. The equilibrium potential for
sodium is +50 mV and for chloride is -60 mV. What is the resting
membrane potential?
A) -60 mV
B) +50 mV
C) 0 mV
D) -70 mV
