Muscle fatigue - GCSE BiologyWatch
- how muscles get the energy they need to work
- what is muscle fatigue and what causes it
- the processes that allow a muscle to recover after exercisr
- the effects on athletes of spending time at high altitudes
- Study Helper
Your muscles can get glucose for this reaction from loads of places! Mostly, it's from the food that we eat and we just absorb it into our bloodstream and our muscles use that. But your muscles also store up glucose in the form of glycogen, so when they need to do really heavy work, they can access the stored glycogen as a quick energy source.
2. Muscle fatigue can happen for lots of reason! Sometimes it's just because they run out of energy (so they can't make enough ATP to work any more), or because waste products can build up in your muscles and get in the way, and stop them from doing their job!
3. Your muscles recover by building back up their energy sources, getting rid of waste products, and by physically repairing themselves. Strenuous exercise, like in weightlifting, causes your muscles to tear from the intense effort, so resources have to be expended to repair them!
4. Afraid I don't really know this one, sorry!
Hope that was helpful.