What is the function of oxygen in the main degradative pathway,aerobic respiration?

We are currently understaffed in the biology area here at Jiskha. Here is what I was able to obtain from a web search.:

The overall reaction of cellular respiration produces water and CO2 from glucose and oxygen. In this process,
ATP is produced from the energy in chemical bonds of glucose. The ATP molecule that is produced and consumed during this process is critical for muscule activity; it converts chemical energy efficiently to useful work.