Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025
Definition
The zona glomerulosa is the outermost layer of the adrenal cortex, responsible for the production of mineralocorticoids, primarily aldosterone. These hormones regulate electrolyte and water balance in the body.
Aldosterone: A hormone produced by the zona glomerulosa that helps regulate blood pressure by controlling sodium and potassium levels in the bloodstream.
Adrenal Cortex: The outer portion of the adrenal gland that produces steroid hormones including those made by the zona glomerulosa.