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19 Cards in this Set
- Front
- Back
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In the central nervous system, myelin is formed by ________.
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Oligodendrocytes
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In myelinated peripheral nerves, saltatory conduction is based on _____________.
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Nodes of Ranvier
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A man suffers a stroke that leaves him partially paralyzed on his right side. What type of glial cell would you expect to find in increased numbers in the area of the brain that was newly affected by the stroke?
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Microglia
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Individual nerve fibers in a large nerve in the peripheral nervous system are directly surrounded by ____________
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Endoneurium
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Damage to ependymal cells would affect the _______________________________.
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Formation of Cerebrospinal fluid
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Where will white matter be blackened by osmium?
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In the spinal cord
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What synthesizes cerebrospinal fluid?
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Ependymal cells
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In a peripheral nerve, fascicles are bounded by __________
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Perineurium
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All of the following can be found in some part of a myelinated axon in a peripheral nerve EXCEPT:
A. Mitochondria B. Neurotransmitters C. Nissl Substane D. Neurotubules E. Neurofilaments |
Nissl Substance (it is found in the cell body)
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Nerves that have several dendrites and a single axon are called __________
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Multipolar
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Formation of scars in the brain are carried out by ____________
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Protoplasmic astrocytes
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All of the following are associated in some fashion with non-myelinated nerves EXCEPT:
A. Schwann cells B. Mesaxons C. Saltatory conduction D. Synaptic vesicles E. Neurofibrils |
Schwann cells
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Where are purkinje cells found?
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In the cerebellum and the heart
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Is Nissl substance eosinophilic or basophilic?
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Very basophilic
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Nerve fibers are bound into fascicles by _____________
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Perineurium
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Oxygen enters long myelinated axons via ___________
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Schmidt-Lanterman clefts
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Saltatory conduction depends on the presence of _________
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Nodes of Ranvier
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Synaptic vesicles:
A. Are abundant in the soma of neurons B. Contain neurotransmitters C. Synthesize neurotransmitters D. Are produced mainly in the soma E. Are abundant on the postsynaptic side of a nerve terminal |
B. Contain neurotransmitters
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In the brain myelin is produced by __________
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Oligodendrocytes
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