Doctors sometimes tap your knee to see your leg give a little kick.
This checks that your body reacts quickly. Your leg kicks all by itself — you don't even try!
More facts about Doctor Dentist
A doctor uses a stethoscope to listen to your heart go thump-thump.
Dentists help keep your teeth clean, shiny, and strong.
A check-up is a friendly visit to make sure your body is growing well.
A little sticky plaster helps a small scratch feel better.
The very first toothbrushes were just soft twigs from trees.