Response to Exercise

• How does the body respond to increased energy needs during exercise?

  By increasing heart rate, breathing rate, and breath volume.
• What happens if there is not enough oxygen during vigorous exercise?

  Anaerobic respiration takes place, producing lactic acid.
• What is oxygen debt?

  The amount of extra oxygen needed to break down lactic acid after exercise.
• How is lactic acid transported after exercise?

  It is transported to the liver to be converted back to glucose.
• What is needed for muscles to contract during exercise?


  More energy