👉 The ul fluid, also known as urethral mucous membrane fluid, is a clear, watery substance produced by the urethral mucosa, which lines the urethra in both males and females. It serves several crucial functions: it lubricates the urethra to facilitate smooth passage of urine and semen, protects the urethral lining from mechanical damage, and helps maintain a healthy environment by neutralizing acids and trapping debris. This fluid is produced continuously and is essential for urinary and reproductive health, ensuring comfort and preventing infections.