👉 Fluids, which include blood, lymph, and cerebrospinal fluid, are essential for the proper functioning of biological systems. Blood, a complex fluid composed primarily of water, red blood cells, white blood cells, platelets, and various proteins, circulates throughout the body to transport oxygen, nutrients, hormones, and waste products. Lymph, a clear, colorless fluid, plays a crucial role in immune defense and the removal of cellular debris. Cerebrospinal fluid, a clear, colorless liquid surrounding the brain and spinal cord, provides cushioning, protects against mechanical injury, and helps regulate the chemical environment of these sensitive structures. These fluids, each with unique compositions and functions, maintain homeostasis and support the overall health of the organism.
