How can your muscles produce enough energy to function properly?
Muscle cells contain organelles called mitochondria which oxidize sugar in order to produce ATP which is the chemical that provides energy for muscle function.
The horse uses its store of chemical energy from the carbon food it eats (grass), which is combined with oxygen breathed in from the atmosphere in the muscles to produce carbon dioxide, CO2, which is breathed out. This process releases chemical energy into the muscles which produce mechanical energy to carry the horse forward.
When a basketball player bends his knees before jumping energy is stored what is another term for stored energy?
In this case the player is compressing muscles in his legs which then can be expanded to produce kinetic energy. The energy stored in the muscles would be a form of elastic potential, but I don't think it is quite the same as winding up a rubber band, because the muscles actually produce energy as well as release stored energy. You might get a better explanation from section Human Physiology.
Carbohydrates are the body's main source of fuel. Carbohydrates are easily used by the body for energy. All of the tissues and cells in our body can use glucose for energy. Carbohydrates are needed for the central nervous system, the kidneys, the brain, the muscles (including the heart) to function properly.
How your muscles produce mechanical energy is by your blood carries evergy-rich moleculs to your muscle cells where the chemical energy is stored in these molecules is released. As the muscle contracts this released energy changes in to mechanical energy and thermal heat. Which produces mechanical energy.