Kapitel 19 5e upplagan

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• Hypertrophy When a muscle increase in bulk by adding structural proteins to individual cells instead of using mitosis and adding new cells
• Atrophy When the muscle fibre reduces muscle mass because it's not used, the muscle fibres lose action and mysosin components of the myofibrils
• Analogenesis When endurance training leads to new capillaries growing sprout branches from existing vessels
• Sacropenia Age-related loss of muscle mass, with its related loss of strength and function
• Myostatin Growth factor that was found to be expressed specifically in developing and adult skeletal muscles, with the function to regulate muscle mass
• Akt1 Pivotal protein in muscle cells that appears to regulate the balance between synthesis and degradation

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