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.
Preorbital gland
Deer have seven major external scent glands, distributed throughout their bodies. These glands are the forehead glands (located on the forehead), the preorbital glands (located below the eyes), the nasal glands (located inside the nostrils), the interdigital glands (located between the toes), the preputial gland (located inside the foreskin of the deer's penis), the metatarsal glands (located outside of the hind legs), and the tarsal glands (located inside of the hind legs). Though it is not their primary function, the salivary glands also function as scent glands. Deer rely heavily on these scent glands to communicate with other members of their species, and possibly even with members of other species. A deer may rub its preorbital gland (e.g., on a branch) purely for pleasure.