2 divisions of the nervous system

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2 divisions of the nervous system

• PNS Peripheral Nervous System
• CNS Central Nervous System
• brain, spinal cord

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brain

• 3 main divisions of brain
• hindbrain midbrain forebrain

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hindbrain

• a number of important fiber tracts project
  through the hindbrain into higher brain regions

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hindbrain

• a number of important fiber tracts project
  through the hindbrain into higher brain regions
• medulla

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hindbrain

• a number of important fiber tracts project
  through the hindbrain into higher brain regions
• Medulla
• Reticular formation NE locus coerulus - 5-HT
  (serotonin) raphe nuclei

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hindbrain
medulla
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hindbrain

• a number of important fiber tracts project
  through the hindbrain into higher brain regions
• medulla
• Pons
• -raphe -

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hindbrain

• a number of important fiber tracts project
  through the hindbrain into higher brain regions
• medulla
• pons
• cerebellum

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hindbrain
medulla
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midbrain

• Sensory information
• Reward
• Ventral tegmental area
• movement
• substantia nigra -

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forebrain

• cerebral cortex
• subcortical structures

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forebrain

• Cerebral cortex
• role of convolutions

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4 lobes of cerebral cortex

• frontal

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frontal
parietal
temporal
occipital
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4 lobes of cerebral cortex

• frontal
• parietal

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frontal
parietal
temporal
occipital
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4 lobes of cerebral cortex

• frontal
• parietal
• temporal

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frontal
parietal
temporal
occipital
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4 lobes of cerebral cortex

• frontal
• parietal
• temporal
• occipital

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frontal
parietal
temporal
occipital
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Some subcortical structures

• thalamus

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The thalamus communicates with much of the
cerebral cortex - serving as a sensory and motor
information relay.
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Some subcortical structures

• thalamus
• hypothalamus
• important for hormonal release
• also major DA projections

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Some subcortical structures

• thalamus
• hypothalamus
• limbic system
• important for emotion learning and memory
  reward major DA pathway

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Some subcortical structures

• thalamus
• hypothalamus
• limbic system
• basal ganglia
• important for movement major DA pathway that
  originates at substantia nigra terminates here

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http//brainmind.com/BrainMaps5.html
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Major DA pathways

• mesolimbic reward, emotion, etc
• nigrostriatal important for movement
  Parkinsons Disease degeneration of the DA
  neurons in this pathway
• tuberofundibular - hypothalamus

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NE arousal, depression, also the NT in part of
the sympathetic NS
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5HT imp in sleep, depression, aggression (maybe)
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basal forebrain, hippocampal, midbrain nuclei PNS
neuromuscular junction, sympathetic ns,
parasympathetic ns