Energy systems

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  • Created by: saffron
  • Created on: 17-05-13 09:35
Define Energy
Energy is the capacity to do work. This is measured in Joules (J)
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Define Chemical Energy
Energy that is produced by a complex series of chemical reactions, this is kinetic energy (from movement) or potential energy (stored energy due to gravity).
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Define Power
Power is the rate at which energy is used, or energy used per second. This is measured in Watts (W)
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Define ATP
our energy currency, found in all cells, whehn broken down energy is released.
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Define Glycogen
stored carbohydrate found in muscle and liver which is used as an energy source.
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Define Aerobic
with O2
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Define Energy sources
The substrates used to provide the ATP used in muscle contractions
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Define Adipose tissue
special tissue made up of cells in fats which are stored- mainly found under the skin and surrounding major organs.
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Define Tryglycerides
Main form of stored fat; used as an energy source.
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Define Resynthesise
To rebuild/remake/make again
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Define Mitochondria
(Organelles within the cell) where chemical reactions of aerobic production take place.
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Define Anaerobic
without O2
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Define Glycolysis
breaking down glycogen into pyruvic acid, producing (4 molecules) of ATP.
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Define Pyruvic acid/Pyruvate
End product of Glycolysis
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Define Krebs cycle
a series of chemical eractions in the mitochondria that oxidises acetyl CoA to CO2 and combines H with H carriers
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Define Electron Transport Chain
series of chemicl reactions where H is oxidised to H20 and lots of ATP is produced (34 molecules).
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Define Beta Oxidation
Breakdown of fats into acetyl CoA within the Sarcosplasm
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Define VO2 Max
the maximum amount of O2 taken in, transported and used by the body per minute. Also known as aerobic capacity and measures in ml for each Kg of body weight per min (ml/kg/min).
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Define O2 Consumption
The amount of O2 used by the body
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Define O2 Defecit
When insufficient O2 is available at the start of exercise to provide all the ATP needed aerobically.
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Define Steady State
the period of exdercise when O2 consumption matches energy being used
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Define aerobic capacity
the maximum rate someone can consume O2
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Define EPOC
the volume of O2 consumed above restin levels following exercise/during recovery
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Define FAST component (ALACTIC)
O2 used for rapid resynthesis of PcR and resaturation of myoglobin
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Define SLOW component (LACTACID)
O2 used to remove lactic acid and maintain high HR, BR and body temperature
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Other cards in this set

Card 2

Front

Energy that is produced by a complex series of chemical reactions, this is kinetic energy (from movement) or potential energy (stored energy due to gravity).

Back

Define Chemical Energy

Card 3

Front

Power is the rate at which energy is used, or energy used per second. This is measured in Watts (W)

Back

Preview of the back of card 3

Card 4

Front

our energy currency, found in all cells, whehn broken down energy is released.

Back

Preview of the back of card 4

Card 5

Front

stored carbohydrate found in muscle and liver which is used as an energy source.

Back

Preview of the back of card 5
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