Many drugs used during surgery can interfere with the urination process. in these cases, the excretory system is not damaged, but the correct signals are not being sent to activate it. what system is most likely malfunctioning?

When the correct signals are not activated. that means that the prescription/surgical drugs are interfering with the nervous system. Signals originating from the nervous system regulates the levels of water and ions in the body. The integumentary system overall is being affected in this case.