Role of ATP in muscle movement

• Muscle cells use ATP to power contraction and movement. • The hydrolysis of ATP to ADP releases • ATP can be regenerated by adding to ADP. • During muscular contraction, ATP molecules: • Energize the myosin head • Detach myosin from actin • ATP must be then regenerated by bonding a phosphate to ADP. The energy form that bond comes from other fuel sources.

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