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14 Cards in this Set
- Front
- Back
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main features of neuron
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soma, axon, dendrites
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main features of soma
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nucleus, mitochondria, rough ER, golgi apparatus, plasma membrane
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SOMA
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cell body; many of the major features of neuronal somas are similar to those observed in other cells throughout the body
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nucleus
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a prominent feature of the soma and contains the nucleolus
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mitochondria
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chief energy source for the neuron
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adult neurons and glycogen?
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adult neurons do not store large amounts of glycogen and thus are dependent upon circulating glucose and oxygen for energy
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rough ER and golgi apparatus
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responsible for synthesizing and packaging proteins
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plasma membrane
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lipid bilayer as in other cells; plays critical role in controlling ion flow into and out of the neuron
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main features of axon
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axon hillock, myelin sheath, node of ranvier, terminal bouton
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axon hillock
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initial segment of the axon that tapers from the cell body
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myelin sheath
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glial cell wrapping around the axon and acts as insulator
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node of ranvier
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area that exists between myelin sheaths; signals "jump" between nodes
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terminal bouton
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the end of the axon; acts as the presynaptic component of a synapse; contains many mitochondria and synaptic vessels
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features of dendrites
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diameter, dendritic spines
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