👉 Complimentary fluid, also known as free fluid or non-repayable fluid, is a component found in various biological systems, particularly in the reproductive organs of mammals. It's essentially a fluid that is freely available within the body without any cost to the organism producing it, often derived from blood plasma. This fluid plays a crucial role in lubricating and nourishing reproductive tissues, facilitating smooth movements during mating and fertilization processes. In the female reproductive tract, for example, it helps to maintain an optimal environment for sperm survival and movement, while in males, it aids in the transport of sperm. The term "complimentary" underscores its free nature, as it's not produced in large quantities and isn't directly replenished by the organism's metabolic processes.
