organisation

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  • organisation
    • digestive system
      • liver
        • where bile is produced
          • emulsifies fats
          • neutralises stomach acid
      • gall bladder
        • where bile is stored
      • large intestine
        • where excess water is absorbed from food
      • salivary glands
        • produce amylase enzyme in salyva
      • stomach
        • produces protease enzyme, pepsin
        • produces HCl
          • kills bacteria
          • gives the right pH for protease enzyme (pH2-acidic)
      • pancreas
        • produces protease, amylase and lipase enzymes, and releases these into small intestines
      • small intestine
        • produces protease, amylase and lipase enzymes
        • this is also where the digested food is absorbed out of the digestive system into the blood
    • the lungs
      • trachea
        • wind pipe
      • diaphragm
        • seperates the thorax from the lower part of the body
      • intercostal muscle
      • bronchiole
      • alveoli
        • little air sacks in the lungs
        • where gas exchange happens
    • circulatory system
      • heart
        • valves
          • keep the blood flowing in the right direction
        • left and right atrium
        • vena cava
          • blood flows into the heart
        • pulmonary vein
          • blood flows into the heart
        • aorta
          • blood flow out of the heart
        • pulmonary artery
          • blood flow out of the heart
      • blood vessels
        • arteries
          • carry blood away from the heart
          • strong walls
          • layers of muscle and elastic fibers
        • capillaries
          • one cell thick
          • small lumen
          • permeable walls for diffusion
        • veins
          • bigger lumen
          • thinner walls
          • valves
  • ribcage
    • protects the lungs
    • the lungs
      • trachea
        • wind pipe
      • diaphragm
        • seperates the thorax from the lower part of the body
      • intercostal muscle
      • bronchiole
      • alveoli
        • little air sacks in the lungs
        • where gas exchange happens

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