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Question Answer % Correct
True or False: One Schwann Cell can make 100s of internodes on axonsFalse
46.7%
an autoimmune disease in which the fatty myelin sheaths around the axons of the brain and spinal cord are damaged, leading to demyelination and scarringmultiple sclerosis
46.7%
these cells form and maintain myelin in the PNSSchwann Cells
43.3%
astrocytes, oligodendrocytes, microglia, and ependymal cell are all examples of _____.glia
43.3%
True or False: Ependymomas can spread from the brain to the spinal cord through CSF.True
43.3%
True or False: Neuroglia form synapses and are electrically excitable.False
40%
axoplasmic transport toward the cell body is known as _____.retrograde
36.7%
these cells form and maintain myelin in the CNSoligodendrocytes
36.7%
Purkinje Neurons are mostly associated with which region of the brain?cerebellum
36.7%
Diseases such as rabies, herpes, polio, and tetanus all access the CNS via ______ axonal transportretrograde
36.7%
axoplasmic transport distally from the cell body is known as _____.anterograde
33.3%
long stretches of myelin are interrupted by narrow gaps known as ______ __ _____.nodes of ranvier
33.3%
this structure substantially separates the CNS from the molecular and cellular constituents of the bloodblood brain barrier
33.3%
how many axons per neuron?one
33.3%
insulation for rapid impulse conductionmyelin
33.3%
true or false: Wallerian Degenration is much slower in the CNSTrue
33.3%
these glial cells in the CNS are involved in the reuptake of peptide hormones and glutamateastrocytes
30%
these glial cells of the CNS are responsible for regulating extracellular potassium levelsastrocytes
30%
True or False: The phases of nerve regeneration in the PNS include infiltration of connective tissue of lesion with Wallerian degeneration, growth cone formation, and growth distalTrue
30%
neurotransmitter at neuromuscular junctionacetylcholine
26.9%
these cells of the CNS are responsible for inducing and maintaining endothelial tight junctions of vascular cells of the blood brain barrierpericytes or astrocytes
26.7%
these cells of the CNS are covered with cilia, which allow for the circulation of CSFependymal cells
26.7%
these cells of the CNS are capable of initiating an immune response and antigen presentationmicroglia
26.7%
the cerebral cortex is formed from ___ layers of neurons6
26.7%
pyramidal neurons are mostly associated with what structure of the brain?cerebral cortex
26.7%
the neuron's site for afferent inputdendrites
26.7%
these cells of the CNS provide structural matrix in which the neurons of the CNS reside and also help maintain the homeostatisastrocytes
23.3%
these cells of the CNS line the ventricles of the brain and the central canal of the spinal cordependymal cells
23.3%
these cells of the CNS arise from fetal macrophagesmicroglia
23.3%
these glial cells establish and maintain cellular boundaries between the CNS and associated non-CNS tissues such as vasculature inside the brainastrocytes
23.3%
structure formed by injured axons that feels out the environment and directs the axon regenerationgrowth cone
23.3%
the rough ER and ribosomes of neurons are referred as _____.Nissl bodies
20%
this type of transport is required for trophic or nutritive support of the cell bodyretrograde
20%
Schwann cells are derived from ___ ____ cells.neural crest cells
20%
process an axon at the site distal to the axotomy undergoes after it has been severed at some point from the cell bodyWallerian degeneration
16.7%
severing of an axon is known as _____.axotomy
16.7%
Question Answer % Correct
2 types of neuronal synapseschemical and electrical
16.7%
microglia of the CNS arise from which germ layer?mesoderm
16.7%
neurons that relay messages locallyinterneurons
16.7%
.2-8mm/dayslow axonal transport
16.7%
pre-synaptic endings or button-like enlargements that form the proximal component of neural synapsesbouton
13.3%
macroglia (astrocytes, ependymal cells & oligodendrocytes) of the CNS arise from which germ layer?neuroectoderm
13.3%
400 mm/ dayfast axonal transport
13.3%
Retrograde transport is important in maintaining axons because it provides ____ factors to the soma of the neurons.trophic
13.3%
which class of proteins are used in fast anterograde axoplasmic transport?kinesin
10%
neurons that extend long distances are known as _____ neurons.projection
10%
this structure correlates neuroplasticity, learning, or abnormal developmentdendritic spines
10%
______ are a family of proteins that promotes that encourage survival of nervous tissueneurotrophins
10%
term for abnormal aggregation of neuronal cytoskeletonlewy body
10%
Key ingredient to neuronal environment that allows for optimal axonal regeneration. Growth cones like to stick to this basement membrane componenetlaminin
10%
neurons are derived from what embryonic germ layer?neuroectoderm
6.7%
what is the region of the axon in which the action portential is initiated?initial segment
6.7%
the process of moving proteins and organelles along axons is known as ____ _____.axonal transport
6.7%
anterograde fast transport is used to primarily transport what?organelles
6.7%
the metabolic trophic center of neuronscell body
6.7%
second most common cause of dementialewy body disease
6.7%
characteristic findings of Alzheimer's that contains degenerative pre-synaptic endings along with astrocytes and microgliasenile plaques
6.7%
the process in which immediate cessation of transmission is followed by gradual degradation of the axon and its enveloping myelin sheath, and ultimately, removal of all remnants byWallerian degeneration
6.7%
This drug, used for the Treatment of Hodgkin's disease, prevents formation of microtubules thereby suspending or ablating axonal transport in neuronsvincristine
6.7%
where are astrocytomas normally found?cerebral cortex
6.7%
slow anterograde axoplasmic is used to primarily transport what?small neurotransmitters
3.3%
all cortical neurons grow and differentiate from where?subependymal zone of the telencephalon
3.3%
due to axotomy, the cell body experiences a process in which it swells, the nucleus moves to an eccentric location, and fragmentation of the Nissl Substance occurs... What is this chromatolytic reaction
3.3%
this process occurs after injury to the CNS and is characterized by astrocytic hypertrophy and proliferation of astrocytic processesastrogliosis
3.3%
term for collections of degenerative pre synaptic endings along with microglia and astrocytessenile plaque
3.3%
loss of neuron that is innervated by the primary injured neuronanterograde transneuronal degeneration
3.3%
Loss of what from the primary injured neuron causes retrograde transneuronal degeneration?trophic factors from injured neuron
3.3%
What is the main intrinsic factor required for optimal regeneration?metabolic capacity
3.3%
The ____ and ____ of dendrites provide the index of a neuron's receptive field.number; distribution
0%
responsible for movement of mitochondria, lipids, synaptic vesicles, proteins to and from the cell body through the cytoplasm of its axon (the axoplasm).axonal transport
0%
Where are ependymomas typically found?cerebral cortex and spinal cord
0%
these tumor arise in the cerebellum that arise from the granule cell layer... commonly found in childrenmedulloblastomas
0%

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Created Jan 15, 2012ReportNominate

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