Human Body Explorer
Your body runs dozens of processes right now without asking you. Tap an organ to highlight it, read what it does, and see which system it belongs to.
Heart
About 100,000 beats a day.
Pumps blood so oxygen and fuel reach every cell.
How it works
Organs never work alone — they are grouped into systems that share a job, like circulation or digestion.
The circulatory system delivers oxygen and fuel; the respiratory system loads that oxygen; the digestive system extracts the fuel.
Tap each organ to see its system, its main job, and one number that puts its work into perspective.
Fun facts
Your heart beats around 100,000 times a day and pumps about 7,500 litres of blood.
Laid flat, your lungs' air sacs would cover roughly half a tennis court.
The liver performs over 500 separate jobs, including cleaning your blood.
Your brain uses about 20% of your body's energy while being just 2% of its weight.
