Certified Hemodialysis Technician Exam 2025 – 400 Free Practice Questions to Pass the Exam

Aldosterone is a steroid hormone produced primarily by the adrenal glands, not the kidneys. Its main role is to help regulate blood pressure by controlling sodium and potassium levels in the body. While the kidneys do play a critical role in the effects of aldosterone by responding to it, they do not actually produce this hormone.

In contrast, renin is an enzyme secreted by the kidneys that helps regulate blood pressure and fluid balance. Erythropoietin is a hormone produced by the kidneys that stimulates red blood cell production in the bone marrow, particularly in response to low oxygen levels in the blood. Calcitriol, the active form of vitamin D, is also produced by the kidneys and is essential for calcium homeostasis and bone health.

Understanding these distinctions helps to clarify the essential functions of the kidneys compared to those of other organs, like the adrenal glands, which produce various hormones including aldosterone.