👉 A referred fluid is a term used in medical and scientific contexts to describe a fluid that is associated with or connected to a specific anatomical structure or system, often through a vascular or lymphatic pathway. Unlike non-referenced fluids, which exist independently of any particular organ or tissue, referred fluids are transported to specific areas by blood vessels or lymphatic channels. For example, arterial blood from the heart is referred to the brain as cerebral blood, and venous blood from the legs is referred to the lungs as pulmonary blood. This association helps in understanding the distribution and function of fluids within the body, particularly in relation to organ perfusion and fluid balance.