Journeys: Kidneys. Stop 3

Balloon bladder

Wee runs down two little tubes into the bladder, and it grows. When the lamp lights up, touch the toilet!

The lamp lit up! Nerves are telling the brain the bladder is full. Time for the toilet!

Too soon, the bladder is nearly empty. Wait for the lamp.

Oh, the bladder is tight now! Time for the toilet.

The bladder stretches like a balloon. When it is full, you feel it is time for the toilet.