In the series, Bergquist played both the questioning boy Kalle and the patiently explaining Janne, who talks pedagogically about how the body works.

Episode 1
What is it that keeps us up so that we are not flat as pancakes?
Nov 10, 1975

Episode 2
Why do we have to breathe?
Nov 11, 1975

Episode 3
The food we eat - where does it go?
Nov 12, 1975

Episode 4
How can we think, do different things, see and hear?
Nov 13, 1975

Episode 5
Now the whole body is almost finished!
Nov 14, 1975