How much blood does an average person have in their body?

The average adult has approximately 5 to 6 liters of blood in their body. This volume is essential for various physiological functions, including oxygen transport, nutrient delivery, temperature regulation, and immune response. The exact amount can vary based on several factors, such as body size, sex, and overall health. Typically, males tend to have a higher volume of blood than females due to differences in body composition and size. Understanding this baseline is crucial for emergency medical dispatchers, as it helps assess blood loss in trauma situations, which can be critical in determining the urgency and type of medical response needed.