Sentence Examples


  • They possess (save for certain Archiannelida, most Hirudinea, and other very rare exceptions) setae or chaetae implanted in epidermal pits.
  • The setae are implanted metamerically in accordance with the metamerism of the body, which consists of a prostomium followed by a number of segments.
  • The setae ar ° invariably formed each within an epidermic cell, and they are sheathed in involutions of the epidermis.
  • The setae are organs of locomotion, though their large size and occasionally jagged edges in some of the Polychaeta suggest an aggressive function.
  • They are disposed in two groups on either side, corresponding in the Polychaeta to the parapodia; the two bundles are commonly reduced among the earthworms to two pairs of setae or even to a single seta.

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