peristaltic locomotion

zoology

Learn about this topic in these articles:

In locomotion: Bottom locomotion
Peristaltic locomotion is a common locomotor pattern in elongated, soft-bodied invertebrates, particularly in segmented worms, such as earthworms. It involves the alternation of circular- and longitudinal-muscle-contraction waves. Forward movement is produced by contraction of the circular muscles, which extends or elongates the body; contraction of…
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In locomotion: Fossorial invertebrates
Peristaltic locomotion, which is generated by the alternation of longitudinal- and circular-muscle-contraction waves flowing from the head to the tail, is similar to the above pattern. Forward progression is more continuous, however, because of the contraction waves. The sites of longitudinal contraction are the anchor…
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