meatus

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meatus

[mē′ād·əs]
(anatomy)
A natural opening or passage in the body.
References in periodicals archive ?
Endoscopic examination revealed that the middle meatuses were unremarkable, but examination of the area of the right sphenoethmoid recess revealed purulent discharge over the anterior face of the sphenoid sinus (figure, B).
With respect to the latter, secretions synthesized by the lining mucosa are transported to the nasal meatuses; they then flow posteriorly along the medial surfaces of the middle and inferior conchae to reach the nasopharynx.