👉 A specific fluid, often referred to as a biological fluid, is a type of fluid that plays a crucial role in various physiological processes within living organisms. These fluids include blood, lymph, synovial fluid, cerebrospinal fluid, and others, each serving unique functions. For instance, blood transports oxygen, nutrients, hormones, and waste products throughout the body, while synovial fluid lubricates and protects joints. Specific fluids maintain homeostasis, facilitate digestion, and support immune responses, among other vital functions, making them indispensable to the proper functioning of biological systems.