It is a temporary food storage chamber.
Temporary food storage
The function of an earthworm's gizzard is that the gizzard grinds organic matter.
The gizzard must be tough, for the gizzard's main function is to grind and digest tough food.
Reproduction
Yes the gizzard diggests the food / crushes it
The function of the gizzard in a grasshopper is to grind food. Gizzards are also found in chicken, fish, and some reptiles.
you stick a finger in it and it see if it chokes or explodes
They have a foot inside their stomach.
Holding place for food before it enters the gizzard.
to walk and fly
it has a really important thing to do. it makes it able to sense thing that are very far away from that cockroach
The mouth with teeth help to grind food into smaller pieces. This has a similar function to a bird's gizzard.
The function of the crop in an grasshopper is to store the food.