Which hormone is secreted from the adrenal medulla?

The hormone secreted from the adrenal medulla is norepinephrine. The adrenal medulla is the inner part of the adrenal glands and is part of the body's response to stress, particularly in the 'fight or flight' response. It produces catecholamines, including norepinephrine and epinephrine (adrenaline), which are crucial in preparing the body for quick action by increasing heart rate, blood pressure, and energy supplies.

Amino acid hormones, while important in the body's endocrine system, are a broader category of hormones that can include several different types not necessarily produced by the adrenal medulla. Examples of amino acid hormones include thyroid hormones and other non-adrenal hormones. The other choices, such as progesterone and estrogen, are steroid hormones produced by the ovaries and other tissues, not by the adrenal medulla. Therefore, the accurate hormone produced by the adrenal medulla to focus on is norepinephrine.