Telson vs. Uropod — What's the Difference?

The telson is the posterior-most division of the body of an arthropod. Depending on the definition, the telson is either considered to be the final segment of the arthropod body, or an additional division that is not a true segment on account of not arising in the embryo from teloblast areas as other segments.

Uropods are posterior appendages found on a wide variety of crustaceans. They typically have functions in locomotion.

The rearmost segment of the body of certain arthropods.

One of the last pair of posterior abdominal appendages of certain crustaceans, such as the lobster or shrimp.

An extension of this segment, such as the middle lobe of the tail of a lobster or the stinger of a scorpion.

(anatomy) either of the two posterior abdominal appendages of the lobster, shrimp and some other crustaceans

(zoology) The part of an arthropod or crustacean posterior to the last segment, often resembling an armored tail or tip of the tail.

(immunology) the hind part of polarized leukocytes, mostly involved in cell-to-cell interaction, cell activation and apoptosis

The terminal joint or movable piece at the end of the abdomen of Crustacea and other articulates. See Thoracostraca.

Any one of the abdominal appendages of a crustacean, especially one of the posterior ones, which are often larger than the rest, and different in structure, and are used chiefly in locomotion. See Illust. of Crustacea, and Stomapoda.