👉 The annual fluid, also known as total plasma volume, refers to the sum of all components in blood plasma, including water, electrolytes, proteins, and other dissolved substances. It represents the total volume of fluid in the circulatory system, accounting for about 55% of total body water. This volume is crucial for maintaining blood pressure, transporting nutrients and waste products, regulating body temperature, and supporting various physiological processes. The annual fluid is dynamic, constantly being replaced by new plasma produced in the liver and lost through processes like urine formation and respiration.
