A doctor uses a stethoscope to listen to your heart go thump-thump.
The stethoscope carries the sound up to the doctor's ears. It helps them check that you are strong and healthy.
More facts about Doctor Dentist
Dentists help keep your teeth clean, shiny, and strong.
A check-up is a friendly visit to make sure your body is growing well.
Doctors sometimes tap your knee to see your leg give a little kick.
A little sticky plaster helps a small scratch feel better.
The very first toothbrushes were just soft twigs from trees.