| haustellum |
pl. haustel´la [L., from haustus draw up] a mouthpart of certain ectoparasites, such as bedbugs and lice, modified for piercing and sucking, consisting of a hollow tube with an eversible set of five stylets, by which the organism attaches itself to the host and through which the blood is drawn up.
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| haustorium |
pl. hausto´ria [L., from haustus draw up] a structure of certain parasites adapted specially to penetrate the host's tissues and absorb nutrients and water.
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| haustral |
pertaining to the haustra of the colon.
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| haustral s. |
the formation of pouches in the wall of the large intestine, by alternating contraction and relaxation of circular muscle fibers. It keeps the intestinal contents plastic and assists in propelling them toward the rectum.
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| haustration |
1. the formation of a haustrum. 2. a haustrum.
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