What hormone is produced by the zonula Glomerulosa of the adrenal cortex?

The correct answer is aldosterone, which is produced by the zona glomerulosa, the outermost layer of the adrenal cortex. Aldosterone plays a crucial role in regulating blood pressure, fluid and electrolyte balance by promoting sodium reabsorption in the kidneys. This reabsorption process facilitates water retention, which is critical in maintaining effective circulating blood volume and blood pressure.

Cortisol, another hormone, is produced by the zona fasciculata and is involved in stress response, metabolism, and inflammation regulation. Adrenaline, or epinephrine, is primarily produced in the adrenal medulla and is key in the body's fight-or-flight response. Androgens, which include testosterone and similar hormones, are produced in the zona reticularis and contribute to the development of male characteristics and reproductive functions. Therefore, while these hormones are all essential within the body's endocrine system, only aldosterone is specifically produced in the zona glomerulosa.