What does the prefix "endo-" indicate?

The prefix "endo-" originates from the Greek word "endon," meaning "within" or "inner." It is commonly used in medical terminology to describe structures, conditions, or processes that occur inside a particular organ or system. For instance, "endoscopy" refers to a procedure that allows for visualization inside the body, specifically within a cavity or organ. Similarly, "endogenous" refers to something produced from within an organism, indicating that it originates internally rather than from an external source.

Understanding the meaning of "endo-" is crucial in recognizing and interpreting various medical terms that describe internal processes or conditions, which is a fundamental aspect of healthcare communication.