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Neuroscience Final Exam Multiple Choice Latest Update Actual Exam from Credible Sources with 125 Questions and Verified Correct Answers Golden Ticket to Guaranteed A+ Verified by Professor
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Course
Neuroscience
Institution
Neuroscience
Neuroscience Final Exam Multiple Choice Latest Update Actual Exam from Credible Sources with 125 Questions and Verified Correct Answers Golden Ticket to Guaranteed A+ Verified by Professor
Neuroscience Final Exam Multiple Choice Latest
Update 2024-2025 Actual Exam from Credible
Sources with 125 Questions and Verified Correct
Answers Golden Ticket to Guaranteed A+
Verified by Professor
A scientist looks through a microscope at the structure of a neuron. The scientist notices
a layer of molecules separating the neuron's intracellular space from the extracellular
space. What is this part of the cell?
A) Organelle
B) Soma
C) Neuronal Membrane
D) Nuclear Envelope - CORRECT ANSWER: C) Neuronal membrane
Absolute refractory period - CORRECT ANSWER: Period after a nerve impulse fires
where the neuron can't fire again due to the inactivated voltage-gated sodium channel
At what points do the somatic sensory axons enter the spinal cord?
a) dorsal roots
b) ventral roots
c) dorsal root ganglia
d) ventral root ganglia - CORRECT ANSWER: a) dorsal roots
Axon hillock - CORRECT ANSWER: Protrusion from the soma where axon begins; site
of nerve impulse
Axons of the nervous systems are described as afferent and efferent according to the
direction in which they carrey information. Which is an afferent projection?
a) sensory input to the spinal cord
,b) motor output of the spinal cord
c) interneurons of the spinal cord
d) sensory input to the spinal cord, motor output of the spinal cord, interneurons in the
spinal cord - CORRECT ANSWER: b) motor output of the spinal cord
Brain slices are bathed in a concentrated K+ solution to stimulate neurotransmitter
release. Why must Ca++ ions also be present in the bathing solution?
a) it causes a large membrane depolarization
b) it keeps the brain slices alive
c) transmitter release requires the entry of Ca++ into the axon terminal
d) it stimulates many synapses in a region of the brain - CORRECT ANSWER: c)
transmitter release requires the entry of Ca++ into the axon terminal
Cell theory - CORRECT ANSWER: all organisms are made of cells;
cells>tissues>organs>organ systems>organisms
Concentration gradient - CORRECT ANSWER: Tendency of flow from high to low
concentration when two areas are not at equilibrium
Depolarization - CORRECT ANSWER: Process of membrane potential becoming less
negative; occurs with influx of Na+
Diffusion - CORRECT ANSWER: ???
Distinguish between the "head" and "tail" of phospholipids:
A) The phosopholipids have a nonpolar "head" and polar "tail"
B) The phosopholipids "head" contains hydrophilic phosphate and "tail" contains a
hydrophobic hydrocarbon
C) The phospholipid "head" is hydrophobic and the hydrocarbon "tail" is hydrophilic
, D) The phospholipid "heads" face each other and "tails " face the watery extracellular
and intracellular environments - CORRECT ANSWER: B) The phosopholipids "head"
contains hydrophilic phosphate and "tail" contains a hydrophobic hydrocarbon
Equilibrium potential - CORRECT ANSWER: Voltage at which ions and and their electric
charges are balanced inside and outside of cell membrane
Essay Question on Exam 1 - CORRECT ANSWER: Essay Question on Exam 1
Galen's study of sheep brains was the basis for a theory of brain function that prevailed
for almost 1500 years. Which represents this view?
A) The heart is the center of intellect and the brain is the cooling system
B) Ventricular localization of brain function
C) Mind brain duality
D) Parceling the cerebrum into lobes - CORRECT ANSWER: B) Ventricular localization
of brain function
How are released neurotransmitters cleared from the synaptic cleft?
A) enzymatic destruction and diffusion
B) exocytosis
C) endocytosis
D) all of the above - CORRECT ANSWER: A) enzymatic destruction and diffusion
How do the lipids of the neuronal membrane contribute to the neuronal membrane
potential?
A) Encourages chemical interactions with water
B) Catalyzes chemical reactions
C) Integrates cytosol of neuron with extracellular fluid
D) Forms a barrier to water-soluble ions and water - CORRECT ANSWER: D) Forms a
barrier to water soluble ions and water
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