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Cardiovascular System Maria Fernandez, cardiac cycle, EGGS,…

- - - - Interweaving network of capillaries) consist of two types of vessels
      - True capillaries
        
        directly connects an arteriole to a venule
      - Vascular Shunt
        
        gas exchange by diffusion (high to low concentration)
- - - - 2 atria (L&R)
        
        thin walled collecting chambers
      - 2 ventricle (L&R)
        
        thick muscular pumping chamber
        
        L&R sides are separated by interatrial and interventricular septum
    - - Caused blood to flow in one direction only
      - Atrioventricular (AV) Valves-
        
        Right=tricuspid
        
        left= bicuspid or mitral
      - Semilunar valves
        
        after ventricles
      - Pulmonary
        
        comes before lungs
      - Aortic
        
        comes before aorta
      - Atrioventricular (AV) Valves
        
        Flaps of these valves are controlled by strings chordae tendonae
        
        When they valves close they make (longer and louder (lub) of the heart beat
      - The semilunar valve
        
        separates ventricles from arteries
        
        close under very high pressure anf make the dup sounds of the heart beat
        
        *normal heart beat
    - - Superior vena cava
      - atrioventricular / coronary grove
      - antrioventicular grove
      - Coronary grove
      - Apex
      - Base
    - - <
      - <
  - - - Thin layer of connective tissue
    - - Cardigan muscle, the layer that contracts
    - - Simple squamous epithelium, continuous with blood vessels
- - - - right ventricle
        
        pulmonary artery
        
        lungs
        
        pulmonary vein
        
        left atrium
        
        Bicuspid valve
        
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