Problem
Explain what happens to the cardiac cycle during exercise. Begin with the nerves involved in stimulating the heart.be specific with the names of the nerves, Neurotransmitters involved, and how very specifically they stimulate cells of the heart. Follow that stimulation through the heart and as the stimulation reaches each section of the heart, make sure to talk about not only what the chambers of the heart are doing at each stage of stimulation but also whether the valves are doing (or not doing) and when blood is flowing. Additionally, talk about how the cardiac cells are stimulated to depolarize and how that gets spread from cell to cell.