meatus

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meatus

[mē′ād·əs]
(anatomy)
A natural opening or passage in the body.
References in periodicals archive ?
In those species of Dytiscinae that have been described, cibarial meatuses (channels) are present on each side of the head that lead posteriorly from the venter of the adnasale (lateral lobes) to unite medially as a closed ci barium just anterior to the mouth (4, 5, 6, 7).
basilaris that is directly related to extra-oral digestion with an emphasis on the morphology of mandibles, the cibarium, and cibarial meatuses.
The cranium and frontoclypeal complex of mature (prepupal) larval exuviae are transparent, permitting observations of the labrum, cibarium, cibarial meatuses (Fig.