The adrenal medulla is different from the adrenal cortex in that the adrenal medulla a. is stimulated to release its hormones by the nervous system secretes acth b. produces only steroid hormones does not release hormones into the bloodstream

The correct answer is option A. is stimulated to release its hormones by the nervous system secretes ACTH.

Explanation:

The adrenal medulla is surrounded by the adrenal cortex and at the center of the adrenal gland. The adrenal medulla cells secrete epinephrine (adrenaline) and norepinephrine (noradrenaline) into the bloodstream. It is also secrets the small amount of dopamine hormone.

The release of these hormones is regulated by the sympathetic preganglionic neurons. It is regulated by the same mechanism as the sympathetic nervous activity.

Thus, the correct answer is option A. is stimulated to release its hormones by the nervous system secretes ACTH.