Metabolism is a broad term that includes all chemical reactions that occur within body cells. It includes breaking down substances into simpler building blocks (the process of catabolism), synthesizing more complex cellular structures from simpler substances (anabolism), and using nutrients and oxygen to produce (via cellular respiration) ATP, the energy-rich molecules that power cellular activities. Given what you know about metabolism, which of the following statements is false? Metabolism is regulated largely by the nervous system. Regulation of body temperature Typically only a local effect, not spreading to the entire circulation