Pin WormPin worms(Enterobius vermicularis) are parasitic animals that attack the human intestines. The pin worms range from 5-13 mm depending on the gender, with females being larger than males. Pin worm infections are common in the United States and Europe.
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The Muscular SystemThe muscular system of the Pin Worm consists of a layer of longitudinal muscles under the skin that allow for movement, similar to the Round Worm.
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