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Cardiovascular system - Coggle Diagram

- - - - cell to cell: gap junction
  - - - slow to let Ventricle fill
  - - - AV node to centricles: fast conduction fibres
- - - - Receive blood from rest of the body
    - - Pump blood into rest of body
    - - systemic circulation
    - - pulmonary circulation
    - - control blood from atria to ventricles
    - - control blood from ventricles to bloodstream
  - - - high pressure
    - - create resistence
    - - site of exchange
    - - contain most blood at all time
      - low blood pressure
      - back to heart
- - - - funny sodium channel
      - reaches threshold--> fast L-type Ca channel
      - K channel repolarise
  - - - longer rest stage--> slow down
- - - - cause by arterioles contraction
      - Sympathetic
        
        adrenaline or noradrenaline
        
        increase heart rate
        
        Beta 1-adrenoceptors on heart
        
        increase opening of funny Na channel in pacemaker cells
        
        stronger contraction
        
        Beta 1-adrenoceptors on vascular smooth muscle
        
        increase Ca influx
      - parasympathetic