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Ex Phys Energy Systems
Energy Systems covered in Exercise Physiology
27
Other
Undergraduate 3
10/26/2015

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Cards

Term
Energy
Definition
Capacity to do work
Term
What are the inputs for the Anaerobic Glyolysis Energy System?
Definition
Glucose/Glycogen, ATP, ADP, and P
Term
What are the strengths of the anaerobic glycolysis energy system
Definition
Does not require oxygen, provides energy quickly in 15 to 120 seconds
Term
What are the weaknesses of the anaerobic glycolysis energy system?
Definition
It has a limited capacity, and creates lactic acid
Term
What is the mechanism of the anaerobic glycolysis system
Definition
The glycogen molecule is rearranged and broken down to transfer energy for phosphorylation of ADP to ATP
Term
How many enxymatic reactions occur to break down glucose and glycogen into ATP
Definition
12
Term
What determines whether glycolysis is anaerobic or aerobic?
Definition
The fate of pyruvic acid, or what it becomes
Term
What does pyruvic acid become during anaerobic glycolysis?
Definition
lactic acid
Term
What does pyruvic acid become during aerobic glycolysis?
Definition
acetyl CoA
Term
When is the energy used by the oxidative system primarily used
Definition
at rest, during endurance exercises or low-intensity exercise
Term
What does the Krebs cycle oxidate following glycolysis, beta oxidation, and protein breakdown?
Definition
Carbohydrates for glycolysis, fatty acids for beta oxidation, and amino acids for protein breakdown
Term
what are the inputs for the oxidative phosphorylation energy system
Definition
Glucose/Glycogen, ATP, Oxygen, ADP, and P
Term
What is the mechanism of the oxidative phosphorylation energy system
Definition
a glucose molecule is broken down completely, providing energy for ATP synthesis directly and indirectly through hydrogen electrons
Term
What are the strengths of the phosphorylation energy system?
Definition
Its capable of produing large amounts of ATP over an extended period of time
Term
What are the weaknesses of the phosphorylation energy system?
Definition
It has a slow rate of ATP synthesis and requires oxygen to operate
Term
What are adipocytes?
Definition
The sites of fat storage and metabolism
Term
What are saturated fats
Definition
fats that are saturated with hydrogen atoms
Term
what are unsaturated fats
Definition
fats that are double bonds of carbon, and not saturated with hydrogen
Term
Where do LDLs carry fats?
Definition
To the heart
Term
Where do HDLs carry fats?
Definition
To the liver
Term
What are two lipid enzymes?
Definition
Lipoprotein lipas (LPL) and Hormone Sensitive Lipase (HSL)
Term
What is lipolysis
Definition
Lipolysis is the breakdown of a fat (triglycerides) into glycerol and free fatty acids. The rate of the breakdown is largely based on blood flow
Term
What does lactate inhibit?
Definition
Lipolysis
Term
When does fat oxidation reach its peak?
Definition
60% of VO2 max
Term
What is the bodies most plentiful source of energy?
Definition
stored fat
Term
Where does stored fat come from
Definition
triacylglycerol in fat cells and in muscles
Term
What is the first step in utilizing fatty acids
Definition
lipolysis, where it is split into fatty acids and glycerol
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