👉 The term "fluid" can refer to a wide range of substances, but in its most common context, it denotes any substance that is neither solid nor gas, but instead takes the shape of its container while maintaining a consistent volume and density. Examples include liquids like water, oil, and alcohol, as well as biological fluids such as blood, saliva, and synovial fluid found in joints. These fluids play crucial roles in various bodily functions, including transporting nutrients and waste, maintaining temperature, lubricating joints, and supporting cellular activities. Each fluid has unique properties and compositions that make them essential for life and homeostasis in living organisms.
