Post Views: 577 Sodium is one of the three macro-minerals present in the human body. Sodium, potassium, and chloride together are known as electrolytes that are essential for maintaining the water balance in the body. What is the role of sodium in the body? Sodium (Na) is an important constituent of the fluid present outside and inside the cell. Proper concentration of sodium is necessary to maintain osmotic balance and keep the cell in proper shape. Maintains blood volume: The total amount of sodium in the body affects the amount of fluid in the blood (blood volume) and around the cells. Transport: Sodium helps in the transport of glucose and amino…