Recap of CB08c

• What are the lower chambers of he heart called?

  Ventricles
• What stops blood flowing the wrong way in the heart?

  Valves
• Which side of the heart has the thicker muscle walls?

  The left side
• What parts of the body does the right side of the heart supply with blood

  The lungs
• Which blood vessel carries blood to the left atrium from the lungs

  Pulmonary veins
• your body needs a constant supply on energy for:

  • Moving
  • Keeping warm
  • Producing and breaking down substances
• What is the word equation for aerobic respiration?

  Glucose+oxygen->carbon dioxide+water
• What is cellular respiration?

  Cellular respiration is a series of chemical reactions that release energy from glucose.
• What kind of reaction is aerobic respiration?

  Exothermic, meaning a process in which energy transfer increased the temperature of the surroundings because some energy is transferred out of the cells by heating, which helps keep many animals warm
• Where does the blood absorb glucose from?

  The digested food in the small intestines
• What happens when your heart rate increase?

  • Increase in amount of blood being pumped to your working muscle cells
  • Increase in amount of oxygen being delivered to your muscle cells
  • Increase in amount of waste products being taken away from your muscle cells e.g carbon dioxide
• What happens when your breathing rate increases?

  • Increase in amount of oxygen diffusing into the blood
  • Increase in amount of carbon dioxide being expired
• What happens if there is a lack of oxygen in the body?

  Aerobic respiration cannot take place and not as much energy is released
• How does the body gain energy without oxygen?

  There is still a supply of glucose and so the body created a by-product called lactic acid
• What does anaerobic mean?

  Without oxygen
• What is anaerobic respiration?


  A temporary process that is the incomplete breakdown of glucose and releases less energy than aerobic respiration