Category: I
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Ixodoidea
A superfamily of Acarina, the ticks, in which the adults have a thick cuticle.
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Ixodidae
A family of ticks belonging to the order Acarina, class Arachnida, comprising the hard-bodied ticks including the genera Amblyomma, Boophilus, Dermacentor, Haemaphysalis, Hyalomma, Ixodes, and Rhipicephalus. All are parasitic and of significance as pests or as transmitters of disease in domestic animals and humans. Among the diseases transmitted by ticks are Rocky Mountain spotted fever,…
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Ito’s nevus
Mongolian spot-like cutaneous lesion over the shoulders, supraclavicular areas, sides of the neck, scapula areas, and upper arms. It is present at birth and tends to disappear with time, usually by age 4 or 5. Although cosmetically undesirable to some, the lesion is benign.
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Iteroparity
The state of reproducing more than once in a lifetime.
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Isthmus of uterus
A narrowing of the body of the uterus just above the cervix.
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Isthmus of uterine tube
The thick-walled segment of the uterine (fallopian) tube just before it enters the wall of the uterus.
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Isthmus of thyroid gland
A narrow band of thyroid tissue connecting the right and left lobes of the thyroid gland.
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Isthmus of the fauces
A constriction connecting the posterior mouth cavity proper with the pharynx. The walls of the isthmus are the palatoglossal arches.
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Isthmus of eustachian tube
The narrowest section of the auditory tube, where the bony canal meets the cartilaginous tube.
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Isthmoparalysis
Paralysis of the muscles of the fauces.