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Cardiovascular (heart (conduction system of heart (SA Node (sinoatrical…

- - - - DICT, from diaphragm to root of large vessels, keeps heart in place, keeps heart from overfilling
    - - Visceral- on organ
      - Parietal- farthest from organ
      - membranes - simple squamous, areollar connective tissue
    - - filled w/ serous fluid, reduces friction
  - - - electrical signals, movement of ions
    - - desosome-like structures
    - - contain fascia adherens and intercalated
  - - - serous membrane, visceral pericardium
    - - muscle
    - - inside layer- lines the heart, simple squamous + areolar C.T; covers the valves
  - - - Blood flows through the superior and inferior vena cava into the the right and left atrium and passing through into the ventricles
    - - the ventricles contract and the blood flows out of the aorta through the aortic arch pulmonary trunk
  - - - sinoatrical node- "pacemaker"- set your heart rate; generates electrical signals that spreads through myocardium of aorta; atria contract, send electrical signal to AV node
    - - Atrioventricular node- short delay, to allow the ventricles to fill
    - - long branch at top of right ventricle
    - - located on pulmonary septum
    - - on the outside of the heart
- - - - Moving blood away from heart, largest, proximal to heart - aorta and major branches, stretch and recoil- propel blood
    - - move muscle relative to size than other arteries. take blood to organ, parts of organ; distal to elastic/ conducting arteries; they can contract or dilate to decrease or increase blood flow
    - - 1-2 layers of smooth muscle; can contract or dialate
  - - - Most common; CNS, lungs, smooth muscle, skeletal muscle; intercellular clefts- somewhat leaky
    - - pores, high rate of exchange; small intestine, kidney, choroid plexus
    - - Large, winding, large items can be exchanged- proteins + whole cells; liver=proteins, spleen= whole cells
  - - - smallest veins, much like capillaries, 1-2 layers of smooth muscle
    - - in general, less elastic
      - anastomosis
        
        network of veins- around joints; interconnecting vessels=detour