Adrenal gland
The adrenal glands are named for their location relative to the kidneys. The term "adrenal" comes from "ad-" (Latin, "near") and "renes" (Latin, "kidney"). Similarly, "suprarenal", as termed by Jean Riolan the Younger in 1629, is derived from the Latin "supra" () and "renes" (). The suprarenal nature of the glands was not truly accepted until the 19th century, as anatomists clarified the ductless nature of the glands and their likely secretory role – prior to this, there was some debate as to whether the glands were indeed suprarenal or part of the kidney.
Discovery and development of angiotensin receptor blockers
AT receptors are mainly found in the heart, adrenal glands, brain, liver and kidneys. Their main role is to regulate blood pressure as well as fluid and electrolyte balance. 
AT receptors are highly expressed in the developing fetus but they decline rapidly after birth. In the adult, AT receptors are present only at low levels and are mostly found in the heart, adrenal glands, uterus, ovaries, kidneys and brain.