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In this article we will discuss about the structure of parapodium of heteronereis with diagram.
1. It is the slide of parapodium of Hereronereis.
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2. The parapodium is biramous and ties on either side of a segment and is an organ of locomotion (swimming).
3. It comprises a dorsal notopodii and a ventral neuropodial lobe each of which is supported intermally by a chitinous rod-like aciculum.
4. The aciculum bears numerous oar- shaped setae arranged in fan like manner.
5. Above the notopodium dorsal cirrus is present and below the neuropodium the ventral cirrus is present.
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6. The notopodial and neuropodial lobes are produced into highly vascular foliacious outgrowths.
