The Adrenal Glands: Not just another spleen In my high school biology class, we gave the adrenal glands as much attention as the spleen. That is to say, we gave them no attention. We memorized the roles of the liver, the route of urine through the kidneys, and the complete lifecycle of the human egg. But the adrenal glands? Those things didn't even appear in the Extra Credit questions of an exam. Many of you consider your adrenal glands as just another spleen: you know you have both organs, but they don't get any special attention. Your daily choices either