Which of the following is a hormone secreted by the adrenal medulla?Multiple ChoiceAldosteroneGlucocorticoidMineralocorticoidEpinephrine

Identifying the Hormone

To determine which of the options is a hormone secreted by the adrenal medulla, let's analyze the choices:

1. Aldosterone: This hormone is produced by the adrenal cortex, not the medulla. Its primary function is to regulate sodium and potassium levels in the body.

2. Glucocorticoid: This is a class of steroid hormones produced by the adrenal cortex, such as cortisol, and is not secreted by the adrenal medulla.

3. Mineralocorticoid: Similar to glucocorticoids, mineralocorticoids, like aldosterone, are also produced by the adrenal cortex and do not originate from the adrenal medulla.

4. Epinephrine: This hormone, also known as adrenaline, is secreted by the adrenal medulla. It plays a crucial role in the body's fight-or-flight response, increasing heart rate and blood flow.

Final Answer

The hormone secreted by the adrenal medulla is Epinephrine.