College of Massage Therapists of British Columbia (CMTBC) Practice Exam

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Which of the following hormones is NOT produced by the kidneys?

Renin
Erythropoietin
Calcitriol
Insulin

The correct answer is: Insulin

The hormone that is not produced by the kidneys is insulin. Insulin is primarily produced by the beta cells of the pancreas and plays a crucial role in regulating blood glucose levels. On the other hand, the kidneys are involved in producing several important hormones. Renin, an enzyme that helps regulate blood pressure, is produced by the juxtaglomerular cells of the kidneys. Erythropoietin is responsible for stimulating red blood cell production in response to low oxygen levels; it is also produced in the kidneys. Calcitriol, the active form of vitamin D, is synthesized in the kidneys from its precursor, which further functions in calcium and phosphate metabolism in the body. Understanding the functions and origins of hormones is essential for recognizing the roles different organs play in endocrine regulation and maintaining homeostasis.