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Hi
authors, I’m in need of help for my PE homework!
What is the lactic acid system important for?
What does it use and where is it stored?
What does the aerobic system give us?
Complete: when our muscles have enough…. we get energy
from breaking down.….and..…. The waste products
are...... and ....... we use the aerobic system in most of
our..... it provides energy too slowly for....activities, but
it is important for sports people such as....... Energy from
the CP system is available instantly, but after a burst of
activity......................
Thank you it would be great if you could help me with SOME
of the above! |
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Alright,
I know this might sound like a dumb question to be asking,
but what is anaerobic respiration, cause I've looked in your
book and it has loads on aerobic but not anaerobic, please
could you help me? (The book’s pretty damn good)! |
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Chapter
2 Answers
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Q.
Hi authors, I’m in need of help for my PE homework!
What is the lactic acid system important for?
What does it use and where is it stored?
What does the aerobic system give us?
Complete: when our muscles have enough…. we get
energy from breaking down.….and..…. The waste
products are...... and ....... we use the aerobic system
in most of our..... it provides energy too slowly for....activities,
but it is important for sports people such as....... Energy
from the CP system is available instantly, but after a
burst of activity......................
Thank you it would be great if you could help me with SOME
of the above!
14th November , 2003
The
CP system is used to provide a bust of energy lasting
up to 20 seconds. Then, the lactic acid system is used
to provide energy in the absence of oxygen - when you
are working really hard. The energy comes from glycogen
stores.
The aerobic system gives us less energy, but for much longer
as we can use oxygen to breakdown carbohydrates and fats.
. It's good for walking, running, swimming etc. The waste
products are carbon dioxide and water.
Now you can fill in the gaps!
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Q.
Alright, I know this might sound like a dumb question
to be asking, but what is anaerobic respiration, cause
I've looked in your book and it has loads on aerobic
but not anaerobic, please could you help me? (The book’s
pretty damn good)!
19th October, 2003
Thanks
for the compliment. Anaerobic respiration is also known
as anaerobic glycolysis. In simple terms it is the replacement
of ATP in the muscles using a process that does not involve
oxygen. The process breaks down glycogen, but lactic acid
is formed which fatigues the muscles. So, even though you
might be breathing when you cannot get enough oxygen to
your muscles, for example, when sprinting your body respires
anaerobically. Now, as you know, it is impossible to sprint
forever. You build up an oxygen deficit which has to be
paid back - you use the oxygen to clear lactic acid and
so on. That's why you breathe really heavily at the end
of a sprint when you are actually standing still. We call
the repayment breathing the 'oxygen debt'. Hope this helps. |
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