Which term corresponds to the combining form "ren/o"?

The combining form "ren/o" specifically refers to the kidney. This term is derived from the Latin word "renes," which means "kidneys." In medical terminology, the prefix or combining form is often used to construct terms associated with certain organs or systems. For instance, "renopathy" refers to a disease of the kidneys, highlighting how "ren/o" is integral to discussions regarding renal health or conditions.

The other terms presented do not correspond to the combining form "ren/o." "Sacrum" relates to a bone in the lower back, "nose" refers to the organ of smell, and "wrinkle" describes a crease or fold in the skin. This reinforces the idea that understanding the etymology of medical terms can significantly aid in comprehending their relevance to anatomy and physiology.