Exercise
- Created by: sxdewinder`
- Created on: 10-05-15 15:43
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- Exercise
- Exercise increases heart rate
- Muscles are made off muscle cells, these use oxygen to release energy from glucose, which use to contract the muscles
- An increase in muscle activity requires more glucose and oxygen to be supplied to the muscle cell.
- Extra carbon dioxide needs to be removed from the muscle cells. For this to happen the blood has to flow at a faster rate
- Glycogen is used during exercise
- Some glucose from food is stored as glycogen
- Glycogen's mainly stored in the liver, but each muscle also has its own store
- During vigorous exercise muscles use glucose rapidly, so some off the stored glycogen is converted back to glucose to provide more energy
- Anaerobic respiration is used if there's not enough oxygen
- When you do vigerous exercise and your body cant supply enough oxygen to your muscles, they start doing anaerobic respiration instead of aerobic.
- Anaerobic just means without oxygen. Its the incomplete breakdown of glucose, which produces lactic acid
- glucose = energy + lactic acid
- Lactic acid builds up in the muscles which gets painful
- It does not release energy as much as aerobic respiration
- Anaerobic respiration leads to an oxygen debt
- After resorting to anaerobic respiration when you stop exercising you'll have oxygen debt
- You'll have to repay the oxygen that you didn't get to your muscles in time because your lungs, heart and blood couldn't keep up with the demand earlier on
- This means you have to keep breathing hard for a while after you stop, to get oxygen into your blood
- Exercise increases heart rate
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