BODY STORES OF METABOLIC FUELS
• Glucose circulating in the blood is a primary metabolic fuel.
• Carbohydrate is stored primarily as glycogen in the liver and muscle.
Triacylglycerol is stored primarily in the adipose tissue.
• They are the source of fatty acid and glycerol, the latter of which is a substrate for gluconeogenesis.
Body protein is considered a metabolic fuel because amino acids may be converted to either ketone bodies or glucose.
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