Which hormone is secreted by the adrenal zona glomerulosa?

Which hormone is secreted by the adrenal zona glomerulosa?

• A. Glucocorticoids
• B. Mineralocorticoids
• C. Catecholamines
• D. Sex steroids

Answer: (B)

The adrenal zona glomerulosa is the outermost layer of the adrenal cortex and is primarily responsible for the production of mineralocorticoids. The most well-known mineralocorticoid secreted by this layer is aldosterone, which plays a crucial role in regulating sodium and potassium levels in the body and maintaining blood pressure. Mineralocorticoids are vital for fluid and electrolyte balance, and their secretion is stimulated by factors such as angiotensin II and increased plasma potassium levels. This helps to promote sodium reabsorption in the kidneys, leading to water retention and increased blood volume. Understanding the function of the adrenal zona glomerulosa and its secretion of mineralocorticoids is essential in comprehending how the body maintains homeostasis and responds to various physiological conditions.

The adrenal zona glomerulosa is the outermost layer of the adrenal cortex and is primarily responsible for the production of mineralocorticoids. The most well-known mineralocorticoid secreted by this layer is aldosterone, which plays a crucial role in regulating sodium and potassium levels in the body and maintaining blood pressure.

Mineralocorticoids are vital for fluid and electrolyte balance, and their secretion is stimulated by factors such as angiotensin II and increased plasma potassium levels. This helps to promote sodium reabsorption in the kidneys, leading to water retention and increased blood volume.

Understanding the function of the adrenal zona glomerulosa and its secretion of mineralocorticoids is essential in comprehending how the body maintains homeostasis and responds to various physiological conditions.