page_title: Chaeta
hierarchical_section_title: Chaeta
caption_attribution_description: English: Lepidonotus oculatus specimen, with a microscope image of one of its parapodia (inset). Museums Victoria specimen.
context_page_description: A chaeta or cheta is a chitinous bristle or seta found in annelid worms. Polychaete annelids, are named for their chaetae. In Polychaeta, chaetae are found as bundles on the parapodia, paired appendages on the side of the body. The chaetae are epidermal extracellular structures, and clearly visible in most polychaetes. They are probably the best studied structures in these animals.
context_section_description: A chaeta or cheta (from Greek χαίτη “crest, mane, flowing hair"; plural: chaetae)  is a chitinous bristle or seta found in annelid worms, (although the term is also frequently used to describe similar structures in other invertebrates such as arthropods). Polychaete annelids, ('polychaeta' literally meaning "many bristles") are named for their chaetae. In Polychaeta, chaetae are found as bundles  on the parapodia, paired appendages on the side of the body. The chaetae are epidermal extracellular structures, and clearly visible in most polychaetes. They are probably the best studied structures in these animals.
caption: Specimen of the annelid, Lepidonotus oculatus showing its chaetae projecting laterally, with a microscope image of one of its parapodia and chaetae (inset). Museums Victoria specimen.
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