A: Unfortunately, many long-term effects of medications are not known since many medications are not studied for over 6 to 12 months. Adderall (amphetamine/dextroamphetamine) is a medication that has been used for many years in the treatment of ADHD and narcolepsy.
Answer by Nicole Cooper. Confidence votes 32. The role ATP plays in muscle contraction is that ATP binds to sites on myosin heads, inducing a conformational change in the actin binding site and reducing the affinity for the actin substrate. Hydrolysis of ATP then cocks the myosin head and moves it closer to the z disk.
Muscle contraction. sarcomeres shorten when muscles contract the actin and myosin filaments SLIDE past each other (thus the name sliding filament theory)myosin heads bind briefly bind to the actin (forming cross bridges) and swivel. when crossbridges are broken and actin and myosin return to their original positions and muscles relax. Role of ATP.