Breathing
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Breathing

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Breathing Breathing Presentation Transcript

  • Breathing
  • What we are learning about
    The structure of the lungs (L4)
    How the lungs work ( L5)
    Breathing problems (L6)
  • Why we are learning this
    Many people have breathing problems
    If you go without oxygen for 4 minutes your brain will die
  • starter
    In your groups of three
  • In your groups….Think of a reason why
    an old man was gasping for breath.
      
      
    a boy’s heart was beating very fast.
     
  • Think of a reason why
    an old man was gasping for breath.
    (Possible answers: he has been exercising; his lungs are not working properly; he has emphysema; there is not much oxygen in the air for him to breathe.)
     
     
     
     
    a boy’s heart was beating very fast. What could have caused this?
    (Possible answers: he has been exercising; he is nervous/ anxious/worried; his body is starved of oxygen; he is using a medication such as a salbutamol inhaler; he has been taking some illegal drugs or drunk very strong coffee.)
     
  • Previous work
    Inhaled and exhaled air
    Respiration
  • Previous work
    Inhaled and exhaled air
    - more carbon dioxide and water exhaled
    Respiration
    - produces ENERGY, carbon dioxide and water
    - uses oxygen and glucose
  • Gases table
  • Some Possible answers if your group are stuck
    Water vapour
    Nitrogen
    Rare gases
    20
    0.04
    1
    Waste
  • Gases table
  • LUNG STRUCTURE
    TRACHEA
    RIB
    BRONCHUS
    ALVEOLI
    DIAPHRAGM
  • Breathing
    When your muscles change the size of your lungs.
    Ventilation
    The movement of air into and out of your lungs
  • Inhaling and exhaling
    Inhaling
    The ribs move UP and the diaphragm moves DOWN.
    Exhaling
    The diaphragm moves up and the ribs move down
  • Lung volume
    Tidal volume – how much usually breathe in and out
    - how do you think this changes when you exercise?
    Vital capacity –amount of air can force out of lungs
  • Where does gas exchange occur?
    The alveolimake gas exchange in lungs happen easily and efficiently.
    They have moist, thin walls
    They give the lungs a really big surface area
    They have a lot of tiny blood vessels called capillaries.
  • How do the gases move?
    The gases move by diffusion.
    Diffusion is where gases move from high concentration to low concentration:
    Oxygen diffuses from air in the alveoli into the blood.
    Carbon dioxide diffuses from the blood into the air in the alveoli.
    Capillary
  • Why are the lungs so good?
    absorbing oxygen into and releasing carbon dioxide from the blood in the lungs is called gas exchange
    The air sacs and capillaries have thin walls
    The 150 million alveoli in each lung give ahuge surface area of about 100 m2.
  • keywords
    Trachea (WINDPIPE)
    Bronchus
    Bronchi
    Alveolus
    Alveoli (AIR SACS)
    Diaphragm
  • Breathing/respiration/ventilation is…
    a process involving muscles which change the size of the thorax,
    the movement of air into and out of the lungs
    a cellular process used to release energy.
    Respiration breathing ventilation
  • Breathing/respiration/ventilation is…
    a process involving muscles which change the size of the thorax,
    breathing
    the movement of air into and out of the lungs
    ventilation
    a cellular process used to release energy.
    Respiration
  • Breathing and respiration activity
    Groups 1-4 complete sheet 2
    Groups 5-8 complete sheet 1
  • Loop cards
    In your groups of three
    The cards have a word and a meaning for another word
    Find that word
    Put them in a loop
  • homework
    The kiss of life sheet
    Answer all questions
    And do q 6&7 page 31
    By Friday 1stJuly
    Write this in your planner
  • answers
  • Quick check
    Complete this in your groups of three
  • Gas exchange ‘relay’
    Your team has some info about gas exchange and 3 answers to write
    When complete come to the front to check answers
    You will then get the next set of questions
    Which team will win?
  • Damage
    heat and chemicals from cigarette smoke paralyse the cilia meaning that mucus gets trapped in the lungs.This increases the likelihood of infection
    smoke particles can cause emphysema. The particles inflame the walls ofthe alveoli, causing them to lose their elasticity.The alveoli rupture forming large air pockets. This reduces the surface area of the lungs.
     
    Prolonged exposure to dust will also cause pneumoconiosis.
    In this disease dust gets trapped in the lungs causing inflammation and fibrous tissue to form. Slowly this starts to kill the lung tissue. Coalminers are particularly susceptible to this.
  • Odd one out ?
    alveolus, air sac, trachea, breathing, bronchus
    stomach, lung, windpipe/trachea
  • Odd one out ?
    alveolus, air sac, trachea, breathing, bronchus
    stomach, lung, windpipe/trachea