contractiletailed
Contractiletailed is a term used to describe a group of animals that possess a tail with contractile properties. This means the tail can shorten or lengthen, often in response to stimuli or for movement purposes. The contractiletailed trait is found in various phyla, including Annelida (segmented worms), Arthropoda (insects and crustaceans), and Chordata (vertebrates).
In annelids, such as earthworms and leeches, the tail is used for locomotion and can be extended
The contractile mechanism in these tails is typically achieved through the coordinated action of muscles or