The answer your looking for is muscles however these do activly stretch they can only contract. They are increaset in length by the contraction of a counteracting muscle.
Your skeletal muscles.
A muscle is a tissue capable of contracting in order to move an animal's body.
Muscles extend along the length of the body rather than encircling it which allows the worm to flex its body to move through the soil.
Muscles.
actually diffusion allows materials to move in and out of the cell
The two main functions of joints are for support and movement. Joints allow you to move your body and to support it and hold the bones together.
By contracting muscles in their body.
The type of tissue that allows or produces movement is muscle tissue.
They allow your body to move.
"muscles"
A muscle is a tissue capable of contracting in order to move an animal's body.
signals from the brain to the area and the muscle contracting.
it allows you to move your body.... .... :)
Although the worm has not bones, it does have a hydro scleten which is basicly water and it allows the worm to move by contracting muscle's.
When stretching, you should not move quickly, norcomplete as many stretches as you can in a 5-minute period. These both defeat the purposes of stretching.
to make you move
The Muscular System supports the body and allows it to move.
nerve cells