What does the prefix "nephro-" refer to in medical vocabulary?

The prefix "nephro-" is derived from the Greek word "nephros," which specifically means kidney. This prefix is commonly used in medical terminology to describe conditions, procedures, or diseases related to the kidneys. For example, terms such as nephrology (the study of kidney function and diseases) and nephrectomy (surgical removal of a kidney) illustrate this usage clearly. In contrast, the other options represent different anatomical structures: for instance, the gallbladder is not linked to this prefix, nor are bone or stomach. Understanding these prefixes can greatly enhance one's comprehension of medical terms and their meanings.