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Cardiovascular System (DISORDERS (angina pectoris (Crushing chest pain…

- - - - Atrium and ventricle don't close properly
  - - - blood will pump back into left ventricles
- - - - tricuspid valve
        
        right
        
        prevent blood prevent blood from re-entering RA
      - bicupsid (mitral) valve
        
        left
        
        prevent blood from leaving LV
  - - - Pulmonary valve
        
        b/w right ventricle and and pulmonary trunk
      - aortic valve
        
        b/w left ventricle and aorta
  - - - discharges blood from to the body
        
        thicker myocardium
    - - discharges blood to lungs
        
        low in oxygen
  - - - receives blood from lung
        
        highly oxygenated
    - - receives blood from rest of body
        
        low in oxygen
- - - - visceral pericardium
        
        next to heart
      - parietal pericardium
        
        outside layer
- - - - ventricular walls contract