GCSE Biology - Exercise & Oxygen Debt

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*** WHAT'S COVERED ***
1. Energy requirements during exercise.
* Increased cellular respiration for muscle contraction.
2. How the body increases oxygen supply.
* Changes in breathing rate and volume.
* Changes in heart rate.
3. Aerobic and anaerobic respiration in muscles.
* Conditions leading to anaerobic respiration.
4. Lactic acid and oxygen debt.
* Production of lactic acid during anaerobic respiration.
* Muscle fatigue.
* Repayment of oxygen debt and removal of lactic acid via the liver.
5. Investigating the effects of exercise.
* Measuring breathing rate.
* Measuring heart rate (pulse).

*** CHAPTERS ***
0:00 Introduction: Why Exercise Increases Respiration
0:31 Increased Breathing Rate & Volume
0:52 Increased Heart Rate
1:14 Aerobic vs Anaerobic Respiration
1:31 Lactic Acid
1:57 Oxygen Debt
2:31 Exercise Effects: Breathing Rate
2:52 Exercise Effects: Heart Rate

*** PLAYLISTS ***










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