What does the human body look like inside?
Inside, the body is full of parts that work together. The brain is in the head. The heart and lungs are in the chest. The stomach, liver, intestines and kidneys are in the belly. Bones hold everything up and skin covers the whole body. Tap a part to learn more and open its page.

Drag to turn. Pinch or use the mouse wheel to zoom. Tap a part to see what it does.
Questions people ask
What is the largest organ in the body?
The skin. In an adult it covers about 2 square meters. The largest organ inside the body is the liver.
Which side is the heart on?
Almost in the middle of the chest, behind the breastbone, with its tip pointing left. That is why you feel the beat more on the left side.
Which organs are on the right side of the belly?
At the top, the liver and gallbladder. Lower down, the start of the large intestine and the appendix. The right kidney sits behind, near the back. Belly pain that doesn’t go away should be checked by a doctor.
Which organs are on the left side of the belly?
At the top, the stomach and spleen. The pancreas lies across the belly behind the stomach. Lower down, part of the large intestine. The left kidney sits behind, near the back.
How many organs does the human body have?
It depends on how you count. A common figure is about 78 organs, but some books count more or fewer. The main ones for life are the brain, heart, lungs, liver and kidneys.
Sources
This text was written using these references:
- Introduction to the Human Body · National Cancer Institute (SEER Training)
This content has not been medically reviewed.



