Psyc 355 Final Exam Questions and Answers 2024 Graded A
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Course
Psyc 355
Institution
Athabasca University (AU
)
1. Which glial are responsible for maintaining the integrity of the extracellular fluid that surrounds neurons?
A) Oligodendrocytes
B) Astrocytes
C) Microglial cells
D) Stellate cells - B) Astrocytes
2. At what point do the sensory axons from the periphery enter the spinal cord?
A) Central ...
Psyc 355 Final Exam Questions and
Answers 2024 Graded A
1. Which glial are responsible for maintaining the integrity of the extracellular fluid that
surrounds neurons?
A) Oligodendrocytes
B) Astrocytes
C) Microglial cells
D) Stellate cells - B) Astrocytes
2. At what point do the sensory axons from the periphery enter the spinal cord?
A) Central nuclei
B) Ventral nuclei
C) Dorsal root ganglia
D) Ventral white matter - C) Dorsal root ganglia
3. Some neurons have long axons that stretch from one part of the CNS to another.
What are these called?
A) Interneurons
B) Golgi type II neurons
C) Golgi type I neurons
D) Motor neurons - A) Interneurons
4. Identify an important difference between the cytoplasm of the axon and that of the
axon terminal.
A) Axon terminals have more microtubules.
B) The axon has more synaptic vesicles than the axon terminal.
C) The axon terminal has a specialized nucleus.
D) There are large numbers of mitochondria in the axon terminal. - D) There are large
numbers of mitochondria in the axon terminal.
5. Dendritic spines
A) Can change shape and number based on the strength of synaptic inputs.
B) Are found on both spinous and aspinous neurons.
C) Can sometimes sprout on axons.
D) Are found mostly pyramidal cells that reside in layer V. - A) Can change shape and
number based on the strength of synaptic inputs.
6. Which membrane lies closest to the surface of the brain?
A) Meninges
B) Dura mater
C) Arachnoid
D) Pia mater - B) Dura mater
,Psyc 355 Final Exam 2024
7. Growth cones are associated with
A) axon growth.
B) nervous system development.
C) regeneration in the peripheral nervous system.
D) All of the above - D) All of the above
8. Which neuroanatomical method provides an outline of entire neurons, including all of
the cell's processes (axons and dendrites)?
A) Nissl stain
B) Radioactive glucose stain
C) Golgi stain
D) Axonal degeneration procedure - C) Golgi stain
9. During a period of normal cell death, developing neurons are thought to compete for
A) cell adhesion molecules.
B) death genes.
C) neurotrophic factors.
D) glucose. - C) neurotrophic factors.
10. Identify the protein that helps anterograde transport move materials from the soma
to the terminal.
A) Glutamic acid
B) Kinesin
C) Pyruvic acid
D) MAP - B) Kinesin
11. Which major white matter system forms an axonal bridge linking the cerebral
hemispheres?
A) Dorsal columns
B) Corpus callosum
C) Internal capsule
D) Posterior capsule - B) Corpus callosum
12. Which of the following processes is involved in forming the final the number of
presynaptic and postsynaptic neurons during neural development?
A) Cell proliferation
B) Cell migration
C) Programmed cell death (apoptosis)
D) Cell differentiation - A) Cell proliferation
13. Which statement about dendrites is false?
A) A single cell's dendrites form a dendritic tree.
B) The diversity of neuronal shapes is caused primarily by variation in the form and
shape of dendrites.
C) Dendrites may be several meters in length in giraffes.
, Psyc 355 Final Exam 2024
D) Dendritic spines appear to be subject to modification as a result of experience. - C)
Dendrites may be several meters in length in giraffes.
14. Which process occurs to only a limited extent after birth?
A) Synaptogenesis
B) Glial cell formation
C) Neurogenesis
D) Myelination - C) Neurogenesis
15. Which of the following best describes activity-dependent synaptic rearrangement?
A) When retinal activity inhibits a postsynaptic LGN neuron, the synapses between
them are lost.
B) Almost all activity-dependent synaptic rearrangement occurs before birth as a
consequence of spontaneous electrical activity in developing neurons.
C) Significant activity-dependent shaping of neuron connections occurs after birth and is
influenced profoundly by sensory experience.
D) Actively migrating neural precursor cells are precisely guided to the cortical plate by
the network of radial glial fibers. - C) Significant activity-dependent shaping of neuron
connections occurs after birth and is influenced profoundly by sensory experience.
16. Which of the two phenomenon are the result of somewhat similar neural growth
processes:
A) Creation of the 5 layers of the spinal cord and creation of the 5 cortical layers.
B) Programmed cell death and cell death due to injury.
C) Banding of the tectum in a 3-eyed frog and lamination in the lateral geniculate
nucleus of the thalamus.
D) Regeneration in the central nervous system of salamander that's lost it's tail and
regeneration of peripheral nerves in human after re-attaching a severed finger. - B)
Programmed cell death and cell death due to injury.
17. Which of the following classes of neurons can collect the most incoming information
based on their morphology?
A) Bipolar
B) Monopolar
C) Multipolar
D) Unipolar - C) Multipolar
18. Which of the following neuroscience methods uses light to activate ion channels in a
living animal?
A) electroencephalogram
B) optogenetics
C) patch clamp
D) immunocytochemistry - B) optogenetics
19. Neurons comprise two main structures: axons and dendrites. What is a major
difference between the two?
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