Adrenal glands:

endocrine glands that sit on top of the kidneys. The adrenal glands play an important role in the stress response, secreting glucocorticoids and catecholamines (norepinephrine and epinephrine).

Learn more: What is the HPA axis?

Watch this 2-Minute Neuroscience video to learn more about the role of the adrenal glands in the stress response.