The Chemistry And Physiology Of Digestion For food to be utilized by the body, it must first undergo a series of processes which we call digestion. After we perform the only really voluntary actions involved in the process of nutritionâputting the food into our mouths, chewing and swallowingâthe balance of the digestive process is the function of the autonomic or involuntary nervous system. The changes which foods undergo are largely effected by enzyme and digestive juices.
Definition of process for English Language Learners. : 1  a series of actions that produce something or that lead to a particular result. : 2  a series of changes that happen naturally. 3  medical : something that sticks out of something else.
processual (comparative more processual, superlative most processual) 1  Of or relating to a process, especially to the methodological study of processes in social science. 2  Of or relating to the methodological study of cultural change and variability in archaeology.