01 Skin
The outer layer. The largest organ in the body.
Journey inside
02 Muscles
More than 600 muscles move the body.
03 Skeleton
206 bones carry and protect.
04 Internal organs
Heart, lungs, liver, stomach. Each in its place.
- The heart
- Lungs
- Liver
- Stomach
05 The heart, left and right
The heart leans to the body's left. That is how you tell left from right.
- Body's left, the heart's side
- Body's right
What's in the app
Five ways into the app. Each one opens it in the right place.
- What is where The body's regions and the four abdominal quadrants, and what each one holds.
- Left and right by the heart The heart leans to the body's left. It tells you which side is which, even when the body turns.
- Internal organs Tap an organ: name, position, function.
- Medical notes Clinical context for every key organ: where it hurts and how it is examined.
- Test yourself Tap the right organ, or choose which side of the body it is on.