hemizonid

hemizonid
n. [Gr. hemisys, half; L. zona, girdle]
(NEMATODA: Secernentea)
A nerve commissure from the nerve ring that is highly refractive at the point it joins the ventral nerve cord near the excretory pore; see cephalids, hemizonion, caudalid.

Online Dictionary of Invertebrate Zoology. . 2005.

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Look at other dictionaries:

  • cephalid — n. [Gr. kephale, head] (NEMATA) A nerve commissure of a highly refractive nature that extends from lateral cord to lateral cord ventrally or dorsally, anteriorly they extend from dorsal to ventral; see caudalid, hemizonid …   Dictionary of invertebrate zoology

  • hemizonion — n. [Gr. hemisys, half; L. zona, girdle] (NEMATODA: Secernentea) A small nerve commissure slightly posterior to the hemizonid …   Dictionary of invertebrate zoology

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