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Daniella Mendez, Period 1, Nervous System - Coggle Diagram

- - - - Largest, most complex portion of the nervous system
      - 4 main parts of the brain
        
        Cerebrum
        
        Largest portion: associated with higher mental functions & sensory & motor functions
        
        Diencephalon
        
        Processes sensory input & controls many homeostatic processes
        
        Cerebellum
        
        Coordinated muscular activity
        
        Brainstem
        
        Coordinates & regulates visceral activities & connects different parts of nervous system
    - - Ascending Tracts
        
        Carry sensory information to the brain
      - Major Functions
        
        Transmits impulses to & from the brain & to house of spinal reflexes
      - Spinal Reflexes
        
        Controlled by reflex arcs that pass through spinal cord
  - - - Connects the CNS to viscera & controls subconscious activities
    - - Connects the CNS to skeletal muscles & skin & oversees conscious activites
- - - - Occurs in unmyelinated axons
      - Conduct impulses sequentially over the entire length of their membrane
    - - Occurs in myelinaetated axons
      - Impulses "jump'' from one Node of Ranvier to the next
- - - - Both are located in the ANS
      - Both deal with the spinal cord
  - - - Sympathetic Division is active in conditions of stress or emergency
      - Parasympathetic Division is active under normal, restful conditions
- - - - Diabetes
      - High Cholesterol
      - Blood Vessel Burst
    - - Severe Headache
      - Change in alertness
      - Confusion or Memory Loss
    - - Hospitalization
      - Blood Thinners
      - Stroke Rehab
  - - - Family History
      - Hereditary
      - Environmental
    - - Anxiety
      - Depression
      - Repeated Behaviors
    - - Coping Skills
      - Medication
      - Anxiety Managment
  - - - Hereditary
      - High Insulin Levels
      - Past Head Trauma
    - - Memory Loss
      - Confusion & Disorientation
      - Mood & Behavior Changes
    - - Uncurable
      - Medication
      - Stem Cells
  - - - Assault, fall, or accident
      - Fluid build-up around spinal cord
      - Weakened vertebrae column
    - - Weakness
      - Paralysis
      - Spastic Muscles
    - - Bed Rest
      - Surgery
      - Spinal Traction
  - - - Drug Allergies
      - Tumors
      - Chemical Irritations
    - - Nausea & Vomiting
      - Fever & Chills
      - Stiff Neck
    - - Antibiotics
      - Vaccination
      - Medication fro symptoms
  - - - Hereditary
      - Possibly viral infection
      - Environmental factors
    - - Depression, dizziness, fatigue, memory loss
      - Vision & Hearing Loss
      - Frequent Urination
    - - Physical Therapy
      - Steroid Treatments
      - Assistance devices
- - - - contains major organelles including nucleus
    - - conduct impulses to cell body
    - - conducts impulses away from cell body
  - - - Microglia
        
        Small cells function as phagocytes for bacterial cells & cellular debris, & produce scar tissue in sites of injuries
      - Oligodendrocytes
        
        Form the myelin sheath around axons in brain & spinal cord
      - Ependymal Cells
        
        Produces cerebrospinal fluid in CNS
      - Astrocytes
        
        Lies between blood vessels & neurons
    - - Schwann Cells
        
        The myelin producing neuroglia of the PNS
      - Satellite Cells
        
        Protective coating around cell bodies of neurons in the PNS
- - - - End of dendrite or specialized receptor cell in a sensory organ
    - - Senses specific type of internal/external change
  - - - Dendrite, cell body, & axon of a sensory neuron
    - - Carries info from receptor into brain or spinal cord
  - - - Dendrite, cell body, & axon of a neuron within the brain or spinal cord
    - - Carries info from sensory neuron to motor neuron
  - - - Dendrite, cell body, & axon of a motor neuron
    - - Carries instructions from brain or spinal cord out to effector
  - - - Muscle or gland
    - - Responds to stimulation by motor neuron & produces reflex or behavioral action