Human Body Volumes: Blood, Lung Capacity, Gastric Volume, and What They Reveal About Health
Your body contains ~5 litres of blood, can expand its stomach to 3–4 litres, filters 180 litres of plasma through the kidneys daily, and your lungs hold ~6 litres at maximum capacity. Here's how physiological volume measurements work and what they reveal about cardiovascular shock, respiratory disease diagnosis, and satiety.