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THE CARDIOVASCULAR SYSTEM - Coggle Diagram

- - - - Small, powerfull and untiring organ
      - Cone-shaped hollow organ
      - Situated in the central part of the chest, directed towards the diaphragm
    - - The right heart
        
        receive deoxygenated blood from the body
        
        deliver it to the lungs
      - The left heart
        
        receive oxygenated blood from the lungs
        
        deliver it to the body
      - two phases of heart cycle
        
        Diastole : tâm trương
        
        is the relaxation of the ventricles
        
        Systole : tâm thu
        
        is the active compression of the ventricles
    - - the Pericardium
        
        the outer layer
        
        is a shiny, transparent (trong suốt)). lubricating (trơn) layer
        
        is an integral (cần thiết) part of the heart wall
      - the Myocardium
        
        is powerful, thick (dày) and tireless
      - the Endocardium
        
        the thin inner layer covers the muscle and valves
        
        becomes the endothelium
    - - Septum (vách ngăn): divide heart into two sides
        
        Chambers
        
        the Atria = Auricles
        
        where blood is received from the veins
        
        the Ventricles
        
        where blood is pumped into the arteries
    - - the Tricuspid valve
        
        is the right ventricular valve
        
        it has three flaps that open and close
        
        it prevents backflow into the atrium during systole
      - the Bicuspid valve
        
        is the left ventricular valve
        
        is has two flaps that open and close
        
        it prevents backflow into the atrium during systole
      - the Semilunar valves
        
        look like half moons
        
        the Pulmonary semilunar valve
        
        the Aortic semilunar valve