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.
Myosin has binding sites, known as heads, which bind the actin. When the myosin molecule is provided with ATP, the energy currency of cells, the head moves, pulling the actin filament along. One of the most important functions of myosin and actin, outside of muscle movement, is in cell division.