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CNS (Spinal Cord (Posterior roots (Posterior root ganglion (Big bundles of…

- - - - Big bundles of sensory neuron cell bodies in posterior root
- - - - Function: planning, thinking, decision making, memory, plan/induce voluntary mvmt
    - - Function: sensory awareness; processes sensory stimuli
    - - Function: primary auditory & olfactory cortexes, recognition, language comprehension, emotion, memory
    - - Function: visual cortex
    - - Function: primary gustatory cortex (taste), general visceral sensation
  - - - Location: frontal lobe, anterior to central sulcus
      - Function: primary motor cortex; pyramidal motor neurons for voluntary mvmt
    - - Location: parietal lobes, posterior to central sulcus
      - Function: primary somatosensory cortex; general somatic senses
  - - - Function: motor mvmts of speech
    - - Function: speech comprehension; naming and reading
  - - - Function: connects parts of same hemisphere of cortex
    - - Function: connects one hemisphere to another
    - - Function: ascending (sensory) & descending (motor) fibers; hemispheres-->brain stem-->spinal cord
- - - - Outer layer of tough, dense fibrous C.T.
      - Has (a) periosteal layer (b) meningeal layer (c) subdural space
    - - Vascular layer
      - Has subarachnoid space filled with CSF & blood vessels
    - - Very thin, very vascular layer
      - Has capillaries
- - - - motor mvmt w/ pyramidal motor tracts
    - - Superior colliculi
        
        visual reflexes
      - Inferior colliculi
        
        auditory reflexes
  - - - connection from cerebral cortex to spinal cord
    - - connection from cerebral cortex to cerebellum
    - - involved w/ autonomic behaviors (breathing, heart beat, etc.)
  - - - large axons of pyramidal motor tracts
    - - crossing over from one side to the other; motor tracts communicate to opposite sides of brain
    - - all cranial nerves (except olfactory & optic) have nuclei (neuron cell bodies) in brain stem
    - - afferent; in all parts of brain stem
    - - autonomic behaviors (breathing, heart beat, etc.)
- - - - Connects: midbrain to cerebellum
      - Pathway: efferent (motor)
    - - Connects: cerebrum to cerebellum through pons
      - Pathway: efferent (motor)
    - - Connects: medulla oblongata to cerebellum through spinal cord
      - Pathway: afferent (sensory)