Having muscle bulk (mass) or shape (form) does not automatically mean you have muscle function or force. For strength to occur, several biological systems must operate in sync: Motor Cortex (brain control center) Spinal Cord & Peripheral Nerves (signal pathways) Neuromuscular Junction (NMJ) (connection site) Skeletal Muscle Fibers (contractile units) Cardiovascular Supply & Metabolism (fuel system) 👉 If even one component fails, the muscle may be intact but