The components of the human body. from organ systems to cell organelles, interact to maintain a balanced intemal environment. To successfully accomplish this task, organisms possess many different receptors that detect deviations in the body's intenal state and initate corrective actions. In which of the tollowing ways does the body respond to an increase in skeletal muscle cell activity?

By increasing the heart rate
By increasing the respiratory rate
By converting white blood cells to red blood cells
By producing less hemoglobins