What order does the organ system of the human body operate

If we are talking about the Circulatory System then: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic) are all operated.

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.