Which term means within the body?

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

Answer: (B)

In medical terminology, the word that means inside or within the body is internal. It describes something located inside the body's structures, as opposed to external, which would be outside. The other terms don’t fit: invasive describes entering tissues or spreading into them, intact means whole or undamaged, and kinetic relates to motion. So internal is the best fit for “within the body.”