Please enable JavaScript.

Coggle requires JavaScript to display documents.

The Nervous System Juliana Soto P.6 (Major parts and functions of the…

- - - - Sympathetic Nervous System
        “Fight or Flight”
        kicks in when you are in emergency or non-normal situations (angry, nervous, scared)
      - Parasympathetic Nervous System
        ”Feed and Breed”
        Normal, everyday situations (calms you, happy)
- - - - Types of Neuroglia in CNS
        •Astrocytes- star shaped cells with many processes
        •Oligodendrocyte- most common, from the myelin sheath for neurons
        •Microglia- small, have fewer processes, & are phagocytes. They protect the CNS by phagocytizing microbes and clearing away debris from inflammation & tissue damage
        
        Types of Neuralgia in PNS
        •Schwann Cells- supply myelin sheathes to axons in the PNS & aids the regrowth of damaged peripheral axons
        •Satellite Cells- flattened cells found around cell bodies
- - - - Attached to spinal cord by dorsal & ventral roots
        
        Allows body & brain to communicate
  - - - II Optic Nerve
        Function: Vision
        
        III Oculomotor Nerve
        Function: Eye movement; pupil constriction
        
        IV Trochlear Nerve
        Function: Eye movement
        
        V Trigeminal Nerve
        Function: Somatosensory information (touch, pain) from the face and head; muscles for chewing.
        
        VI Abducens Nerve
        Function: Eye movement
        
        VII Facial Nerve
        Function: Taste (anterior 2/3 of tongue); somatosensory information from ear; controls muscles used in facial expression.
        
        1 more item...
- - - - Remember
        “E” exercise, excitement, emergency, & embarrassment.
  - - - Remeber “O”
        digestion, defection, & diuresis (urination)
- - - - They both respond to external stimuli.
        
        They both are controlled by the CNS
- - - - Interneurons
        connect sensory input to other cells that are required for action
        
        Motor Neurons
        send messages from the central nervous system to the body & muscles
        
        Muscles
        cause us to take action