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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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The characteristic features of Myophosphorylase deficiency include
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The correct answer is  (D) All of the above # McArdle syndrome (type V):# Enzyme Deficiency:> Muscle phosphorylase# Morphologic changes:> Skeletal muscle only-accumulations of glycogen predominant in subsacrolemmal location.> Clinical features: Painful cramps associated with strenuous exercise. Myoglobinuria occurs in 50% of cases. Onset in adulthood (>20 year old). Muscular exercise fails to raise lactate level in venous blood. Compatible with normal longevity.