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Embryology, Aortic/Pharyngeal Arches, Questions: wall? Spiral Evenly…

- - - - Primitive Ventricle
      - Primitive atria
      - Bulbus cordis
      - Sinous venosus
      - Truncus arterious
      - primitive pulm veins
      - Bulvoventricular Fold
        (Superior and posteruor)
        
        Primitive Ventricle
        
        Trabecula Carnea
        L & R. Ventricles
        
        Primitive Atria
        
        Pectinate (ROUGH) atria
        (auricles)
        R>>L Atrium
        
        ATRIAL
        
        Sinus venosus
        
        Right Horn
        
        IVC (small portion)
        
        SA Node
        
        Sinus venorum
        
        Smooth part
        Right Atria
        
        Left Horn
        (of sinous venous)
        
        Coronary Sinus
        
        Bulbus Cordis
        
        Smooth
        R & L Ventricle (conus arteriosus (R SiDE --> Pulmonary Trunk)
        
        VENTRICLES
        
        Truncus arterious
        
        Aorta (ascending)
        
        Pulmonary Trunk
        
        Primitive Pulmonary Veins
        
        Pulmonary veins
        
        Smooth
        L atrium
- - - - Secondary ostium
        (foramen)
        
        As secondary is
        formed, 1 closes
- - - - Aortical Pulmanory Segment (APS)
        FORMS Top portion
        
        Aorta
        
        pulmonary Trunk