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Human Body & Health

As individuals age, the risk of sarcopenia increases, leading to reduced muscle mass and strength. Why does age-related decline in satellite cell function contribute significantly to this condition?

A)Decreased mTOR pathway activation predominates
B)Elevated myostatin expression promotes hypertrophy
C)Impaired muscle fiber regeneration occurs chronically
D)Increased proteasome activity preserves muscle

💡 Explanation

Sarcopenia progression relates to impaired regeneration because satellite cells are crucial for repairing damaged muscle fibers; age diminishes satellite cell functionality, therefore muscle tissue cannot be maintained effectively. This leads to loss, rather than preservation or enhanced growth, of muscle.

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