The adrenal medulla is actually a modified part of the sympathetic nervous system.

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The adrenal medulla is a gland located on top of the kidneys and is part of the endocrine system. However, it is derived from the same embryonic tissue as the sympathetic nervous system and secretes hormones like epinephrine (adrenaline) and norepinephrine that are involved in the sympathetic response to stress and activation of the fight or flight response.

The Adrenal Medulla Is Actually a Modified Part of the Sympathetic