Scolex


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scolex

[′skō‚leks]
(invertebrate zoology)
The head of certain tapeworms, typically having a muscular pad with hooks, and two pairs of lateral suckers.

Scolex

 

the head or anterior portion of the body of a tapeworm, or cestode, by which the parasite attaches itself to the wall of the host’s intestine. The scolex may have any one of various organs of attachment: bothria (longitudinal slits of which there are generally two), sucking disks, and chitinized hooks. In highly developed tapeworms the scolex has four semispheric muscular sucking disks. Many cestodes are characterized by a scolex having sucking disks and a proboscis with hooks. The structure of a scolex, especially of the organs of attachment, is often used in taxonomy for species identification.

References in periodicals archive ?
A) Scolex showing the lack of a rostellar hook crown in the middle of the scolex, which is a synapomorphy in T.
It has be postulated that the hydatid scolex gains access to the pelvis by the lymphatic or haematogenous route [15, 16].
The indirect hemagglutination tests was negative, he underwent surgical resection through Suboccipital-retrosigmoid approach, intraoperative views showing two cystic masses with white cystic content, the cysts were broken and the cysts'membrane with scolex were removed smoothly which were not adherent to cerebellar parenchyma very much.
The diagnosis of IVNCC is based on clinical presentation, Magnetic Resonance Imaging (MRI) evidence of cystic lesions containing the scolex and isolating the parasite histologically from the brain lesions or the CSF.
It is unlikely for a neurocysticercosis ring to have more than 20 mm size, midline shift, irregular thick outline (>20mm) and an absence of scolex in MRI (4-6).
4,8) The adult worms reside in the small intestines of the host, attached by their armed scolex, and produce proglottids.
In a minority of cases, a scolex (small, eccentric internal speck of enhancement or calcification within the cyst) may be visualised.
Ultrastructure of the scolex and tentacles of the metacestode of Polypocephalus species (Cestoda: Lecanicephalidae) from the blue-swimmer crab Portunus pelagicus.
These cases required using treating-diagnostic bronchoscopy with following microscopy of broncholavage fluid, sputum and punctate of the pleural cavity to determine echinococcal scolex hooks and fragments of chitinous surface.