Adrenal Glands Facts, Function & Disease
Adrenal Glands Facts, Function & Disease By David Willams, Live Science Contributor | May 10, 2017 05:32pm ET The adrenal glands sit atop the kidneys. The adrenal glands affect metabolism, blood pressure, the immune system, sex hormones and the body's response to stress. The human body has two adrenal glands. About 1 inch by 2 inches (2.54 centimeters by 5.08 cm), they sit on top of the kidneys.