Which term means within the body?

• A. internal
• B. invasive
• C. kinetic
• D. labile

Answer: (A)

Understanding location terms in medical terminology. Internal denotes something inside the body—its interior or within bodily structures. It’s the standard way to describe things that are located or contained within the body's confines, like internal organs or the internal environment that maintains homeostasis. In contrast, invasive describes entering or spreading into tissues (an action, not a simple location), kinetic relates to motion, and labile refers to stability or rapid change (often about cell turnover). Because the question asks for a term meaning inside the body, internal is the best fit.