ATP is generated in muscles through aerobic oxidative phosphorylation (in mitochondria), anaerobic glycolysis (producing lactate), and via creatine phosphate (a rapid but limited energy source).
El ATP se genera en los músculos mediante fosforilación oxidativa aeróbica (en las mitocondrias), glucólisis anaeróbica (produciendo lactato) y mediante fosfato de creatina (una fuente rápida pero limitada de energía).
| Front | actin filaments and contraction |
|---|---|
| Back | actin filaments have binding sites for myosin heads (actin-myosin binding sites), normally blocked by tropomyosin (so muscle relaxed), when signal stimulates muscles to contract, mysoin heads binds to actin forming mysoin-actin cross-bridges, the heads flex (change angle) which moves actin filaments along, then heads detach and unflex (using ATP) and binds further along actin filament, and process continues |
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