👉 The term "reticularian" is a medical term that refers to a group of cells in the brain called a reticulum, which are responsible for regulating blood flow and temperature throughout the body. The reticularia are located primarily in the hypothalamus, but they can also be found in other parts of the brain such as the cerebellum and pituitary gland. They play a crucial role in controlling various bodily functions, including heart rate, breathing, and movement.