Lipid Catabolism

Fatty acids in triglycerides (TG) are the

major source of energy in the body. TG are 

stored in adipocytes or are found in dietary

fat. 

 40% of daily energy requirement of people 

in industrial countries is met with TG. 

 Main tissues using fatty acids as energy

source are liver, heart and resting skeletal 

muscle

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lipid Metabolism

Building Blocks  for phospholipids and 

Glycolipids. 

2. Fatty acids are fuel molecules.

3. Fatty acids derivatives serve as hormones 

and intracellular messengers.

4. Fatty acids can be attached to protein and 

targeted them to membrane locations.

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High level of ketone bodies in blood are referred to as ketonemia •More ketone bodies in the urine is called as ketonuria. •Lungs mainly eliminate acetone. •The acetyl CoA formed in fatty acid oxidation enters into TCA cycle only if fat and carbohydrate degradation are appropriately balanced

High level of ketone bodies in blood are referred

to as ketonemia  

•More ketone bodies in the urine is called as 

ketonuria.  

•Lungs mainly eliminate acetone. 

•The acetyl CoA formed in fatty acid oxidation 

enters into TCA cycle only if fat and carbohydrate

degradation are appropriately balanced 

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