WORM ,' a
See also:term used popularly to denote almost any kind of elongated, apparently limbless creature, from a
See also:lizard, like the blindworm, to the
See also:grub of an
See also:insect or an
See also:earthworm .
See also:Linnaeus applied the Latin term Vermes to the
See also:modern zoological divisions
See also:Coelentera, Protozoa,
See also:Echinoderma (qq.v.), as well as to those forms which more modern zoologists have recognized as
See also:worms . As a
See also:matter of convenience the term Vermes or Vermidea is still employed, for instance in the Inter-
See also:Catalogue of Zoological Literature and the Zoological Record, to cover a number of wormlike animals . In systematic zoology, however, the use of a division Vermes has been abandoned, as it is now recognized that many of the animals that even a zoologist would describe as worms belong to different divisions of the animal
See also:kingdom . The so-called flatworms (
See also:Platyelmia, q.v.), including the
See also:Planarians (q.v.), Flukes (see
See also:TREMATODES), Cestodes (see TAPEWORM) and the curious
See also:Mesozoa (q.v.), are no doubt related . The marine Nemertine worms (see
See also:NEMERTINA) are isolated . The thick-skinned
See also:round worms, such as the
See also:horse-worm and the threadworms (see
See also:NEMATODA), together with the
See also:Nematomorpha (q.v.),
See also:Chaetosomatida (q.v.),
See also:Desmoscolecida (q.v.) and
See also:Acanthocephala (q.e.),
See also:form a fairly natural
See also:group . The
See also:Rotifera (q.v.), with probably the
See also:Kinorhyncha (q.v.) and
See also:Gastrotricha (q.v.),. are again isolated . The remaining worms are probably all coelomate animals . There is a definite Annelid group (see
See also:ANNELIDA), including the Archiannelida, the bristleworms (see CHAETOPODA), of which the earthworm (q.v.) is the most
See also:familiar type, the
See also:Myzostomida (q.v.), Hirudinea (see LEECH) and the armed Gephyreans (see ECHIUROIDEA) . The unarmed Gephyreans (see
See also:GEPHYREA) are now separated from their former associates and divided into two groups of little
See also:affinity, the
See also:Sipunculoidea and the
See also:Priapuloidea (qq.v.) . The
See also:Phoronidea (q.v.) are now associated with Hemichordata (q.v.) in the
See also:line of vertebrate ancestry, whilst the
See also:Chaetognatha (q.v.) remain in solitary
See also:isolation .
Mention is made under TAPEWORM of the worms of that
See also:species inhabiting the human
See also:body as parasites, and it will be convenient here to mention other parasitic varieties . The most common human parasite is the Ascaris lumbricoides or round worm, found chiefly in
See also:children and occupying the upper portion of the
See also:intestine . They are usually few in number, but occasionally occur in such large numbers that they cause intestinal obstruction . Unlike the tape-worm no intermediate
See also:host is required for the development of this worm . It develops from
See also:direct ingestion of the larvae . Various 'The O . Eng. wyrm represents a word common to Teutonic
See also:languages for a snake or worm, cf . Ger . Wurm,
See also:Dan. and Swed.
See also:orm, Du . Worm . The
See also:Lat. vermis must be connected . The
See also:Sanskrit word is krimi, which has given
See also:kermes, the
See also:cochineal insect, whence "
See also:Skeat takes the ultimate
See also:root to be kar, to move, especially in a circular motion, seen in "
See also:curve," " circle," &c .
The word " worm " is applied to many
See also:objects resembling the animals in having a
See also:spiral shape or motion, as the spiral
See also:thread of a
See also:screw, or the spiral
See also:pipe through which vapour is passed in
See also:distillation (q.v.) . As a term of disparagement and contempt the word is also used of persons, from the idea of wriggling or creeping on the ground, partly, too, perhaps, with a reminiscence of
See also:Genesis iii . 14.symptoms, such as diarrhoea, anaemia, intermittent fever, restlessness, irritability and
See also:convulsions are attributed to these worms . The treatment is the administration of
See also:santonin, followed by a purgative . The threadworm or Oxyuris vermicularis is a common parasite infecting the rectum . The larvae of this worm are also directly swallowed, and infection probably takes place through
See also:water, or possibly through lettuces and watercress . The symptoms caused by threadworms are loss of appetite, anaemia and intense irritation and itching . The treatment consists in the use of enemata containing
See also:quassia, carbolic acid,
See also:vinegar or
See also:turpentine or even common
See also:salt . In addition mild purgatives should be given .
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