Fundamentals of the Nervous system

Fundamentals of the Nervous system - Nervous system...

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Nervous system
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Functions Maintain homeostasis Three characteristics Receives information receptor Integrates information brain/spinal cord Stimulates change Effectors muscle or gland Behavior Information storage
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Structure Divisions Central nervous system Brain and spinal cord Peripheral nervous system- everything outside of brain and spinal cord Sensory neurons = afferent Motor neurons = efferent Somatic nervous system Autonomic nervous system » Parasympathetic NS » Sympathetic NS
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Neurons Cell body Contains cell organelles Receptive surface Clusters of cell bodies Nuclei Ganglia
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Neurons - Processes Dendrites Receive impulses Graded potentials Axon Structure Conducting component Secretory component Releases neurotransmitters Axonal Transport
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Neurons Functional regions Receptive region Chemically gated channels Conducting region Trigger zone Voltage gated Na + and K + channels Secretory region Voltage gated Ca + channels
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Neurons Myelination- wrapping around the neuron axon, makes
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This note was uploaded on 09/14/2011 for the course BIO 227 taught by Professor Lonsdale during the Fall '10 term at Boise State.

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Fundamentals of the Nervous system - Nervous system...

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