neurons are cells of the nervous system. as part of its normal function a neuron pumps sodium ions out of the cell and potassium ions into the cell which statement decribes the role of energy in this proes

Many body systems work together for proper functioning of the body and to maintain internal homeostasis. the works to break down food eaten before exercising. the takes in the nutrients obtained from the food. the body sweats as a mechanism to cool off, because the is working to flush out toxins.