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Cards In This Set
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What is the nervous system?
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The master controlling and communicating system of the body.
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What are the 3 functions of the nervous system?
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1) Sensory input
2) Integration
3) Motor output
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What are the two main branches of the NS?
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Central (CNS)
Peripheral (PNS)
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Two divisions of the Peripheral NS (PNS)?
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Sensory (afferent)
Motor (efferent)
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Two divisions of the efferent division of the PNS?
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Somatic (voluntary)
Autonomic (involuntary)
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Two divisions of the Autonomic NS (ANS)?
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Sympathetic
Parasympathetic
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Of what two principal types of cells is the nervous system made?
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Neurons
Supporting cells (like neuroglia)
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Another name for glial cells?
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Neuroglia
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What are the six types of neuroglia?
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Ependymal cells, oligodendrocytes, schwann cells, satellite cells, microglial cells, and astrocytes.
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Which neuroglia are found in the CNS?
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Oligodendrocytes, ependymal cells, microglial cells, and astrocytes.
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Which neuroglia are found in the PNS?
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Schwann cells and satellite cells.
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What are three *special* characteristics of neurons?
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1) Extreme longevity
2) Amitotic
3) High metabolic rate
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What are two names for the cell body of a neuron?
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Soma, Perikaryon
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Where is the biosynthetic center of a neuron?
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Soma/Perikaryon
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Which organelle is the perikaryon of a neuron missing?
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Centriole.
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