Respiration

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  • Created by: Jenny
  • Created on: 18-11-12 12:26
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  • Respiration
    • Aerobic Respiration
      • Takes place in the presence of oxygen
      • glucose + oxygen --> carbon dioxide + water + energy
      • takes place in the mitochondria
      • Energy released used to......
        • build larger molecules from smaller ones
        • enable muscles to contract
        • maintain a constant temperature
        • make proteins from amino acids
    • Changes during exercise
      • Heart rate increases
        • These changes increase...
          • flow of blood to the muscles
          • supply of oxygen and sugar
          • the rate of carbon dioxide removal
      • The arteries supplying the muscles dilate (widen)
        • These changes increase...
          • flow of blood to the muscles
          • supply of oxygen and sugar
          • the rate of carbon dioxide removal
      • The rate and depth of breathing increases
      • Anaerobic Respiration
        • the incomplete breakdown of glucose
        • less energy is released
        • causes muscle fatigue
          • deep breathing is required to oxidise the lactic acid to carbon dioxide and water
            • the oxygen required to do this is called oxygen debt
        • Waste product is lactic acid
          • Removed by the blood flowing through the muscles

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