name the layers present in the body of leech
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The tubular body wall of the leech contains three distinct muscle layers of differing thickness; an outer thin layer of circular muscle, one or two fibres thick, lying immediately beneath the skin; a thick inner layer of longitudinal muscle, and an orthogonal grid of oblique muscle fibres sandwiched between the other
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The leeches are segmented parasitic worms that belong to the phylum Annelida and compromise the subclass hirudinea .They are closely related to the oligochaetos which include the earthworm..and like them soft and muscular..segmented bodies that can lengthen and contract
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