hooklets


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hook·lets

(huk'letz),
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taenioid tapeworms for attachment to the intestinal mucosa, with the additional aid of suckers; the hooklets can be withdrawn and the rostellum inverted when the tapeworm moves. Various arrangements and forms of the hooklets characterize the families of taenioid cestodes.
2. Hooklets of degenerated scoleces of Echinococcus species in the fluids of the hydatid cyst.
3. The hooklets of the oncosphere, by which it claws out of its membrane sheath after hatching and penetrates the host gut wall; these hooklets can later be found in the cercomer of the procercoid or cysticercoid.

hooklets

the structure by which the distal barbules of bird feathers engage the indentations of the proximal barbules.
References in periodicals archive ?
The hooklets were better visualized in Leishman stained smears than Pap and HE stained smears.
Echinococcus is derived from the Greek echinos meaning hedgehog or sea urchin and kokkus meaning berry, which describes the numerous, spiny hooklets seen in the berrylike scolex of the larva form of the parasite.
These botfly larvae are fairly large, about 2 centimeters long, and have large oral hooklets that they attach to the stomach wall.
Hemispermatophore inner capsular lobe with "crown" of 15 spines or hooklets, median lobe with sclerotized apophyses.
Barbules, smaller fibers that branch from the barbs, can sport small hooklets that lock onto adjacent barbs or barbules.
Each has a tiny head, with suckers - and sometimes with hooklets - to cling to the bowel wall.
The moderate proportion of nonreproductive homoplasy centers around the loss of hooks and hooklets.
To our surprise, we found the cytology smears contained characteristic parasitic elements such as scolices, hooklets, homogeneous eosinophilic-laminated membrane [Figure 1], and calcospherules; a diagnosis of hydatid cyst in parotid gland was made.