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Respiration and the respiratory system (year 8)

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    aerobic respiration and gas exchange system
  •   Study   Slideshow
  • What type of energy is stored in food?
    chemical
  •  15
  • What is aerobic respiration?
    a chemical reaction that uses oxygen to release energy
  •  15
  • Name three things our bodies require energy for
    muscle contraction, growth, repair, cell devision
  •  15
  • What is the chemical equation for aerobic respiration
    glucose + oxygen --> carbon dioxide + water
  •  20
  • Which organelle carries out respiration?
    mitochondria
  •  15
  • What is diffusion?
    movement of particles from an area of high concentration to low concentration
  •  15
  • How is a red blood cell specialised or adapted for its function?
    it doesn't have a nucleus so it has more room for haemoglobin!
  •  15
  • Describe the pathway of air from the nose to the alveoli name at least three structures it passes through
    nasal cavity --> trachea --> bronchi --> bronchioles
  •  20
  • What do alveoli do?
    allow gas exchange to occur
  •  15
  • How are alveoli adapted for their function?
    They have a large surface area (size of a tennis court!) are very thin (one-cell thick), blood vessels very close = quick diffusion
  •  20
  • What type of cell lines the trachea and sweeps out dust and bacteria trapped in mucus?
    ciliated cells
  •  15
  • What is the name of the big muscle under the lungs that controls breathing?
    diaphragm
  •  15
  • What is the name of the muscles in between the ribs that pull the lungs up and out when we inhale?
    intercostal muscles
  •  20
  • A person breathes 40 times in 5 minutes. What is their breathing rate?
    8 breathes per minute
  •  25
  • What happens to your heart rate as you exercise?
    increases
  •  15
  • Name three diseases caused by smoking
    lung cancer, bronchitis, emphysema, asthma, heart disease
  •  20