Glycogen Metabolism Control
Biochemistry
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Carbohydrate Metabolism
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Glycogen Metabolism
Q. McArdle’s disease is caused by deficiencies in muscle glycogen phosphorylase. It causes muscle cramp and exercise intolerance. Why is that?
a
Muscles are not able to access glucose stores during exercise. An accumulation of glycogen causes myocyte damage.
b
Muscles are not able to store glucose as glycogen and quickly run out of energy when they need it.
c
Muscles are not able to release excess glucose in the bloodstream, which eventually causes muscle cell death due to osmotic pressure.
d
Muscles are not able to pick up glucose from the bloodstream and quickly run out of energy.
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