Biology / Unit 12 Bio 2797 short lesson, about 20 seconds
Glycogen Storage and Mobilization
Captions available
The idea
Excess glucose is converted to glycogen and stored in liver and muscle, then broken back down to glucose, spending ATP, per Bio 0508, when blood sugar drops.
In practice
Long-distance running draws on stored muscle glycogen once immediately available blood glucose runs low.
Where people slip
Glycogen storage is limited — once full, further excess glucose converts to fat instead.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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