B5

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  • Created by: Wymer-7
  • Created on: 28-04-14 19:46
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  • B5
    • Skeletons
      • Humans have an internal skeleton made of cartilage and bone, both of which can repair itself
      • The human skeleton starts as cartilage and becomes ossified (turned into bone) by the addition of calcium and phosphorus
      • Ball and socket joints and synovial fluid
    • Respiration
      • Gaseous exchange takes place in alveoli
      • Industrial, genetic and lifestyle choice factors cause lung diseases
      • Methods of respitation limit fish and amphibians to their habitats
      • CO2 at high levels is toxic  in the blood
    • Digestion
      • Due to enzyme requirements, the stomach contents is acidic and the small intestine is alkiline
      • Small digested food molecules are absorbed into the blood plasma
      • Starch is broken down to maltose  then to glucose
    • Reproduction and Growth
      • Hormones( Oestrogen, FSH LH and progesterone) control the menstrual cycle
      • Foetal development can be checked by chromosome analysis
      • Human growth hormone is produced in the pituatory gland
      • Different parts of the foetus grow at different rates
  • The biceps and triceps muscles are antagonists in the arm
    • Skeletons
      • Humans have an internal skeleton made of cartilage and bone, both of which can repair itself
      • The human skeleton starts as cartilage and becomes ossified (turned into bone) by the addition of calcium and phosphorus
      • Ball and socket joints and synovial fluid
  • Blood and Circulation
    • B5
      • Respiration
        • Gaseous exchange takes place in alveoli
        • Industrial, genetic and lifestyle choice factors cause lung diseases
        • Methods of respitation limit fish and amphibians to their habitats
        • CO2 at high levels is toxic  in the blood
      • Digestion
        • Due to enzyme requirements, the stomach contents is acidic and the small intestine is alkiline
        • Small digested food molecules are absorbed into the blood plasma
        • Starch is broken down to maltose  then to glucose
      • Reproduction and Growth
        • Hormones( Oestrogen, FSH LH and progesterone) control the menstrual cycle
        • Foetal development can be checked by chromosome analysis
        • Human growth hormone is produced in the pituatory gland
        • Different parts of the foetus grow at different rates
    • Humans have closed double circulation systems, fish have closed single systems
    • Heart rate is linked to activity
      • Heart muscles contraction is controlled by cells called pacemakers (SAN and AVN
    • A 'hole in the heart' is a hole between either two atria or two ventricles, Oxygenated blood is then mixed up with deoxygenated blood so the blood caries less oxygen
    • Blood can be donated and transfused
  • Some heart problems require heart transplants
    • Blood and Circulation
      • Humans have closed double circulation systems, fish have closed single systems
      • Heart rate is linked to activity
        • Heart muscles contraction is controlled by cells called pacemakers (SAN and AVN
      • A 'hole in the heart' is a hole between either two atria or two ventricles, Oxygenated blood is then mixed up with deoxygenated blood so the blood caries less oxygen
      • Blood can be donated and transfused
    • A heart transplant is the insertion of a new heart
    • Transplants may cause rejection reactions to occut
  • Negative feedback mechanisms control hormone production

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