Which term describes experimentation performed in or on the living tissue of a whole living organism?

Which term describes experimentation performed in or on the living tissue of a whole living organism?

• A. Ex Ex Vivo
• B. In Vivo
• C. In Vitro
• D. Spatial Average

Answer: (B)

In vivo means within a living organism, so it describes experiments conducted in the natural biological context of a whole living being or its tissues. That matches the description of testing or observing while the tissue remains inside the organism, exposing it to normal physiological conditions like blood flow and metabolism. The other terms refer to work done outside the living body: ex vivo involves tissues or organs that have been removed and studied outside the organism; in vitro refers to experiments performed outside a living organism, typically in a dish or culture. Spatial average is not a context term at all, but a processing or measurement concept.

In vivo means within a living organism, so it describes experiments conducted in the natural biological context of a whole living being or its tissues. That matches the description of testing or observing while the tissue remains inside the organism, exposing it to normal physiological conditions like blood flow and metabolism. The other terms refer to work done outside the living body: ex vivo involves tissues or organs that have been removed and studied outside the organism; in vitro refers to experiments performed outside a living organism, typically in a dish or culture. Spatial average is not a context term at all, but a processing or measurement concept.