contractions like muscle
No. They have muscles in their body that helps them move. :-)
it helps them move
body
Snake and earthworm are the 2 animals that move with their body.
The Crop is a body part in an earth worm
Figure it out
The prostomium is the first body segment in an earthworm which is part of a group of worms called segmented worms or annelids. The prostomium does not include the worm's mouth. -Anonymous
it depends on the worm itsself There are about 3 kinds of worm.Like worm segement use its legs or moving like a snake. round worm for example mosquito larva it was smallest kind of worm. flat worm live in water have a flat body move by its tail.
To move the body to and fro with short, writhing motions, like a worm; to squirm; to twist uneasily or quickly about., To move with short, quick contortions; to move by twisting and squirming; like a worm., Wriggling; frisky; pliant; flexible.
Earthworms are invertebrates, which means they do not have a backbone. In fact, they don't have any kind of bones, legs, eyes, or teeth. They feel wet, slimy, and squishy.While earthworms do not have legs, they do have muscles. They have muscles that circle their body and muscles that go from one end to the other.The circular muscles allow the worm to make its body wider or more narrow.The longitudinal muscles can shorten or lengthen the worm's body.Using their muscles, earthworms crawl by lengthening its front part and pushing forward through the soil.Notice how skinny the worm looks when its front end moves forward. Remember that the longitudinal muscles push the worm forward and the circular muscles squeeze the worm's body inward. Working together, these different muscles move part of the worm forward. When this is happening, tiny bristles called setaeon the underside of the worm hold the rear part of the worm in place.Once the front part has pushed forward, the front setae hold the worm in place and the rear setae turn loose. Now the worm is in position to pull its rear end forward.Notice how fat the rear end becomes as the worm's circular muscles relax and its longitudinal muscles contract. The rings of the earthworm expand and contract much like the coils of a slinky.
Worms typically have around 100-150 body segments, called metamerisms. These segments contain muscles, nerves, and other important structures that allow the worm to move and function.
An excretory glandis what the metanephridium of the worm is.Specifically, the body part in question consists of a funnel which links the worm's interior with its exterior. It functions to remove unnecessary hormones, ions, toxins and wastes. The word literally means "after the nephridium", with the nephridium functioning as a worm equivalent to the human kidneys.