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CNS (Brain (Cerebrum (Frontal (Precentral gyrus (Primary motor cortex,…

- - - - Precentral gyrus
        
        Primary motor cortex
        
        Initiates voluntary movement
      - Postcentral gyrus
        
        Primary somatosensory cortex
        
        Signals from skin, proprioceptors
      - Personality
      - Broca's area
        
        Speech production
        
        Left hemisphere
      - Decision-making, pkanning
    - - Process sensory information
      - Wernicke's area
        
        Process/understand language
        
        Left hemisphere
    - - Deep within lateral sulcus
      - Emotions, limbic system
    - - Cortex
        
        No myelination, no axons
        
        Outer grey matter
        
        Neuron cell bodies only
        
        Processing occuring
      - White matter
        
        Association tracts
        
        Within same hemisphere
        
        Commissural tracts
        
        Between hemispheres
        
        Corpus callosum is largest
        
        Projection tracts
        
        Longest tracts
        
        From cortex to thalamus (vice versa)
        
        From cortex to spinal cord (vice versa)
      - Cerebral nuclei
        
        Deep grey matter
        
        Processing occuring
        
        Neuron cell bodies again, no myelination
    - - Thalamus
        
        Collection of nuclei
        
        Amplifies/dampens signals
        
        Sensory signals to cortex come here
        
        No olfaction
      - Hypothalamus
        
        Collection of nuclei
        
        Controls/regulates
        
        ANS
        
        Motivation for food/sex
        
        Endocrine system
        
        Body temperature, hunger, sleep, etc.
      - Epithalamus
        
        Pineal gland
        
        Melatonin
      - Brain Stem
        
        Midbrain
        
        Cerebral peduncles
        
        Link brainstem and cerebrum
        
        Superior colliculi
        
        Responsive movements
        
        Inferior colliculi
        
        Hearing, auditory pathway
        
        Pons
        
        Pyramidal tracts
        
        Involved in voluntary movement
        
        Reticular formation nuclei
        
        Sleep, consciousness
        
        Medulla oblongata
        
        Pyramids
        
        Blood pressure, breathing
        
        Reflexive movements
        
        Pyramidal decussation
        
        Border to spinal cord