Interdependence of the Major Organs in Vertebrate Fuel Metabolism

Fuel Reserves For Brain

None

Preferred Fuel For Brain

Glucose (Starvation: KBs)

Fuel Exported For Brain

None

Fuel Reserves For Skeletal Muscle (Resting)

Glycogen and Protein

Preferred Fuel For Skeletal Muscle (Resting)

Fatty Acids

Fuel Exported For Skeletal Muscle (Resting)

None

Fuel Reserves For Skeletal Muscle (Exertion)

None

Preferred Fuel For Skeletal Muscle (Exertion)

Glucose

Fuel Exported For Skeletal Muscle (Exertion)

Lactate and Alanine (recycled by Liver)

Fuel Reserves For Heart Muscle

None

Preferred Fuel For Heart Muscle

Fatty Acids and KBs

Fuel Exported For Heart Muscle

None

Fuel Reserves For Adipose Tissue

Triacylglycerol

Preferred Fuel for Adipose Tissue

Fatty Acids

Fuel Exported For Adipose Tissue

Fatty Acids and Glycerol

Fuel Reserves For Liver

Glycogen and Triacylglycerol

Preferred Fuel For Liver

Amino Acids, Fatty Acids, and Glucose

Fuel Exported For Liver

Fatty Acids, Glucose, and KBs