This video tells us about Muscular abnormalities with genetic aetiology. Pathophysiology, inheritance pattern, related syndrome, signs and symptoms relayed to mitochondrial myopathies. Mitochondrial myopathy (MM) is rare but is fatal. Mitochondrial myopathies are a group of neuromuscular diseases caused by damage to the mitochondria. TIMELINE: 0:06 Introduction 0:15 Muscle fibres (ragged red) 0:18 Glycogen concentration 0:30 Inheritance 0:36 Subcategories 0:40 Treatment 0:46 Signs and symptoms 1:10 Clumps of disease material 1:22 Cursan disease, Kearns-Sayre syndrome 1:41 Reference