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The Heart Chambers and Blood Supply! (Chambers (Right Atrium (Anatomical…

- - - - Fossa Ovalis
        
        A thin area that is a closed after birth, used for fetal blood supply
      - Opening for the coronary sinus
        
        Coronary sinus drains here
      - Pectinate Muscles
        
        Help with contraction
      - Tricuspid valve
        
        The main valve between the r. ventricle and r. atrium
      - Crista terminalis
        
        Outer portion of the r atrium, origin for pectinate mm
    - - Receives Venous supply from Sup/Inf Vena cava, coronary sinus
        
        Passes deoxiginated blood to r ventricle
    - - Pacemakers
  - - - Mitral valve
        
        Allows oxygenated blood into L lentricle
      - Pulmonary veins
        
        Empty oxygenated blood into atrium
    - - Recieves oxygenated blood from pulmonary veins
        
        Empties oxygenated blood into
  - - - Trabeculae Carne
      - Tricuspid valve
      - Chordae Tendinae
        
        Papillary muscles attach to Tricuspid valve via these
      - Interventricular septum
        
        Separates R and L ventricles
        
        Bundles of HIS are here
        
        Facilitate contraction of ventricles
      - Pulmonary valve/ Pulmonary trunk
        
        Blood to the lungs!
    - - Pumps deoxiginated blood through Pulmonary valve
        
        Blood enters pulmonary trunk/ arteries/lungs
  - - - Contracts forcibly
        
        Oxygenated blood goes out through aortic valve
        
        BLood travels out through aorta, to branches of the body
    - - Mitral valve
        
        Vlave in between r atrium and r ventricle
      - Interventricular septum
        
        Area between l and R ventricles
      - Myocardium
        
        Heart muscle tissue
      - Aortic valve/aorta
        
        Valve to the aorta
        
        Aorta sends blood to rest of the body
- - - - Anterior interventricular Artery/Branch
        
        Supplies the L.atrium, L Ventricle, and anterior R ventricle
      - Circumflex artery
        
        Supplies L portion of the heart
        
        Courses posteriorly
        
        Gives off a L marginal branch
    - - Supplies R atrium and R Ventricle
        
        Courses posteriorly
        
        Gives of R marginal branch
        
        Supplies posterior r atrium and ventricle
        
        Gives off posterior interventricular artery
  - - - Courses anterior/between ventricles
    - - Courses posterior in between ventricles