heart

• What type of circulatory system is the heart?

  double circulatory system
• What is the heart order?

  vena cava, right atrium, right ventricle, pulmonary artery, pulmonary vein, left atrium, left ventricle, aorta
• What prevents blood back flow?

  Heart valves, aorta and veins
• What happens to oxygen in deoxygenated blood?

  Oxygen diffuses into blood from alveoli, it becomes oxygenated
• What happened to oxygenated blood from lungs?

  Oxygen and nutrients go to body
• What is the right side of the heart called?


  pulmonary circulation
• What is the left side of the heart called?


  systematic circulation
• what type of pressure does the pulmonary circulation have and why?

  Low pressure because blood travels a shorter distance to lungs
• what type of pressures does systematic circulation have and why?

  high pressure because blood travels a longer distance to deliver to body parts
• How is coronary heart disease caused?


  Fatty materials black coronary arteries which reduces the amount of oxygen reaching the heart muscle which causes heart attacks and strokes
• What are statins include one advantage and disadvantage?

  Statins are drugs that lower cholesterol in blood

  advantage - prevent heart attacks

  disadvantage - long term drug cholesterol levels will rise is they are not taken and could cause liver problems
• What are stents include one advantage and disadvantage?


  Stents are the medical devices That widen coronary artery Advantage - improve blood flow. Disadvantage - risk of blood clots
• When a heart valve is faulty it may not…


  close properly which causes back flow to atrium or open wide enough which restricts blood flow less blood reaches body
• What would patients require is heart valves are faulty?

  mechanical valve or biological valve
• what are heart transplants include one advantage and disadvantage?

  Heart transplant are when your heart is replaced with a donors heart Advantage: Extends life expectancy Disadvantage: Risk of rejection
• what are the three lifestyle factors that increase risk of coronary heart disease?

  Smoking, poor diet, stress
• What do plasmas do?

  Transport different blood cells around the body as well as carbon dioxide, nutrients, urea and hormones
• What do red blood cells do?

  Transport oxygen
• What do white blood cells do?

  Part of the immune system - ingest pathogens and produce antibodies
• What are capillaries?

  Tiny blood vessels - one cell thick which provides a short diffusion pathway
• What are arteries?

  Blood vessels that carry oxygenated blood away from the heart.
• What is the wall structure of arteries?

  thick, connective tissues for strength, narrow lumen
• What are veins?

  Blood vessels that carry deoxygenated blood back to the heart.
• What is the wall structure of veins?

  Thin, wide lumen with vales