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The nervous system - Coggle Diagram

- - - - causes electro-chemical gradient
- - - - sympathetic - arousing
        
        fight or flight response
        
        prepares body for action in stressful situations
        
        engages all resources to respond to threat
      - parasympathetic - calm
- - - - receives information - detect messages from other neurons
      - convey information to the cell body
- - - - cerebrum - largest part of the brain
        
        frontal
        
        reasoning and thought
        
        parietal
        
        integrates sensory information
        
        occipital
        
        visual information
        
        temporal
        
        auditory information
      - diencephalon
        
        Thalamus
        
        passes all sensory information except for smell through the cerebral cortex
        
        integrates information from various senses
        
        way station
        
        Hypothalamus
        
        regulation of biological needs
        
        controls the autonomic nervous system
        
        vital link between the brain and the endocrine system
        
        basic biological drive - fighting, fleeing, feeding, mating, hunger, thirst, sexual motivation, temperature regulation
    - - cerebellum
        
        muscle coordination
        
        balance
        
        posture
        
        muscle tone
      - medulla oblongata
- - - - sends ions directly via the gap junctions from the cytoplasm of one neuron to the other
      - they are fast because the signal is not converted from the electrical state to any other kind
    - - has the ability to convert signals from electrical to chemical to back to electrical
        
        so at the synapse these signals can be inhibited, modified or split.
      - signals
        
        presynaptic neuron
        
        presynaptic terminals (axon terminals)
        
        vesical sacs - thousands of molecules of neuro transmitters
        
        synaptic cleft
        
        dendrites