hooklets

1. Clawlike, retractile chitinous hooks that encircle or line the rostellum of the scolex of certain taenioid tapeworms for attachment to the intestinal mucosa, with the additional aid of suckers; the h. can be withdrawn and the rostellum inverted when the tapeworm moves. Various arrangements and forms of the h. characterize the families of taenioid cestodes. 2. H. of degenerated scoleces of Echinococcus species in the fluids of the hydatid cyst. 3. The h. of the oncosphere, by which it claws out of its membrane sheath after hatching and penetrates the host gut wall; these h. can later be found in the cercomer of the procercoid or cysticercoid.

Medical dictionary. 2011.

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