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Cardiovascular System (Heart (Heart vavles (tricuspid valve right…

- - - - upon the heart
      - visceral layer of serous pericardium often infiltrated with fat
      - superfiscal
    - - muscle heart
      - forms the bulk of the heart
      - middle
    - - inside the heart
      - Sheet of connective tissue lines heart chambers covers heart valves.
      - located deep to the myocardium
  - - - fasciaas adherens are desmosome like structors
      - gap junctions -electrical signals passes from one cell to next
  - - - Closing of AV valve at start of ventricle contraction
    - - closing of semilunar valve at end of contraction
  - - - Contraction of heart chambers
    - - Expansion the time during which a heart chamber is relaxing and filling with blood.
    - - AV node- delay signal while ventricles fill with blood
        
        AV bundle- bundle of his
        
        Bundle branches
        
        Parkinje fibers
- - - - Tunica externa
        
        CT collagen and elastic fibers that protects and gives strength
      - Tunica media
        
        smooth muscle with collagen elastic fibers
      - Tunica intima
        
        Internal elastic membrane, simple squamous epithelium
  - - - Tunica externa
        
        thicker than artery same composition
      - Tunica media
        
        smooth muscle but less than artery
      - Tunica intima
        
        endothelium
  - - - Tunica initima that has endothelium and basement membrane
        
        Continuous
        
        most common, clefts and least leaky
        
        CNS, lungs, skin, skeletal muscle, and smooth muscle
        
        Fenestrated
        
        more leaky, high rates of exchange
        
        small intestine, endocrine gland, kidneys and choroid plexus
        
        Sinusoid
        
        holes in basement membrane, large, winding exchange things as large as proteins and whole cells
        
        liver, red bone marrow and spleen
- - - - Albumin
        
        helps keep H2O in vessels
      - Globulin
        
        antibodies protects us from pathogens also has transporters and is hydrophobic
      - Fibrinogen
        
        involved with blood clotting
    - - bags of hemoglobin, binds to oxygen and contains iron.
        
        most numerous formed element
    - - neutrofils
        
        Destroy bacteria by phagocytosis
      - eosinophil
        
        turn off allergic responses and kill parasites
      - basofil
        
        Release histamine and other mediators of inflammation
      - lympocytes
        
        Mount immune response by direct cell attack T cells or via antibodies B cells
      - monocytes
        
        Phagocytosis develop into macrophages in tissues
    - - stops bleeding and clot formation