Uses glucose, fatty acids and ketone bodies
• Stores 3/4 of body glycogen
i l i l
Glucose 6‐phosphatase
• In actively contracting muscles
• citric acid cycle dose not generate enough power
• pyruvate is converted to lactate
and alanine that are later moved
to the liver and converted to glucose
• In resting muscles, fatty acids are used
• Heart muscle prefers acetoacetate
(ketone body) to glucose