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Motor Function - Coggle Diagram

- - - - Corticobulbar Tract
        
        Cortex to Medulla
      - Cranial Nerves
        
        Trigeminal
        
        mastication
        
        Facial
        
        facial expression
        
        Hypoglossal
        
        speech, swallowing, and chewing
    - - Corticospinal Tract
        
        Cortex to Spine
  - - - Corticospinal
      - Inhibitory
      - Upper Neuron
      - Cerebellum
        
        Medial: Smooths and Coordinates Movement
        
        Lateral: Organize voluntary movement
      - Basal Ganglia
        
        Organize voluntary movement
    - - Interneurons
        
        Excitatory or Inhibitory
        
        Pools: Convergence,
        Divergence, Repetitive Circuits
      - Walking Circuit
      - Motor Reflex Arc
        
        Receptor
        
        Afferent neuron
        Posterior
        
        Interneuron (MAYBE)
        Inhibitory
        
        Efferent neuron
        Anterior
        
        Efferent Organ/ Muscle
        
        1 more item...
        
        Transmit to higher center of brain
        
        Monosynaptic (w/o interneuron)
        
        Polysynaptic (w/ interneuron)
    - - Muscle proprioceptors
      - Provide feedback to refine movement
  - - - A Alpha
        
        Skeletal Muscle
        Extrafusal
        Motor Unit
      - A gamma
        
        Muscle Spindle
        Intrafusal
        
        Control muscle tone
    - - 30 x more abundant than motor neurons
      - receive input
      - motor reflex arc
      - Renshaw Cells
        
        ventral horn gray matter
        
        release glycine
        
        can be blocked by tetanus toxin
        
        excessive activity, spasms, rigidity
        
        recurrent inhibition
        -prevent excessive firing
    - - coordinate movement
      - distribute commands
      - relay commands to bypass injury
      - coordinate rapid and complex movements
- - - - End on Lower Neuron
  - - - Skeletal Muscle
- - - - Type B Fibers
      - Synapse in Ganglia
      - Originate from lateral horn of T1-L2
    - - Synapse with cardiac muscle,
        glands, smooth muscle