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Cardiovascular System
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Cardiovascular System

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  • 1. Cardiovascular System
    • Made of heart, blood, blood vessels
    • Blood vessels include
      • Arteries = carry oxygen rich blood away from heart, to body
      • Veins = carry oxygen poor blood to heart, away from body
      • Capillaries = smallest vessels allow for exchange of oxygen and carbon dioxide to cells
  • 2. Blood Functions
    • Exchange oxygen and carbon dioxide
    • Fight infection and clot
    • Maintain blood pressure
    • Regulate body temperature
  • 3. Aorta Vena Cava Vena Cava Septum Left Atrium Left Ventricle Right Ventricle Right Atrium Pulmonary Artery Pulmonary Veins Tricuspid Valve Bicuspid Valve Pulmonary Valve
  • 4. Valves in Veins
    • Prevent backflow of blood in body.
    • Found in heart and veins
    • Why veins
    • (Blood returns to heart against gravity so backflow must be prevented)
  • 5. Artery Walls
    • Thick, elastic and muscular
    • Must withstand high blood pressure from pumping of heart
  • 6. Path of Blood
    • Vena Cava (Deoxygenated Blood)
    • Right Atrium (Deoxygenated Blood)
    • Right Ventricle (Deoxygenated Blood)
    • Pulmonary Artery (Deoxygenated Blood)
    • Lungs (Mixed Blood)
    • Pulmonary Vein (Oxygenated Blood)
    • Left Atrium (Oxygenated Blood)
    • Left Ventricle (Oxygenated Blood)
    • Aorta (Oxygenated Blood)
    • Body Capillaries (Mixed Blood)
  • 7. Cardiovascular Problems
    • Artherosclerosis: Cholesterol blocks vessels
    • Hypertension: High BP could cause chest pain and heart attack
    • Stroke: Blood vessel in brain becomes clogged or ruptures
    • Heart Attack: Blocking of blood vessel to heart causing heart cell death
    • Heart Failure: Heart cannot pump enough blood to meet body needs