Nervous Systems

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Nervous Systems

• Chapter 49

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Functional Organization of the Nervous System
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Neuronal Circuits

• Reflex cause an automatic response does not
  invovle the brain.
• Ganglion a cluster of nerve cell bodies found
  outside of the CNS
• Interneurons neurons that integrate sensory
  input with motor output
• Interneuron branches can carry signals to
  different parts of spinal cord or brain
• Convergent circuits bring information from
  different sources
• Divergent circuits send information to different
  regions

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The Brain

• Brainstem automatic activities
• Medulla oblongata controls homeostatic functions,
  and conducts data to other parts of the brain
• Pons helps medulla with regulation
• Midbrain integration of sensory information
  from auditory and visual pathways

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• Cerebellum movement and balance
• Hand-eye coordination uses cerebellar function

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• Diencephalon intrgrating centers
• Thalamus sensory input and motor output center,
  integration to other brani centers
• Hypothalamus homeostatic regulation
  thermostat, hormonal regulation of anterior
  pituitary and production of posterior pituitary
  hormones.

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Cerebrum most complex integration center thought
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