A bodily passage or tube lined with epithelial cells and conveying a secretion or other substance.
A continuous tube formed by a row of elongated cells lacking intervening end walls.
An enclosed conduit for a fluid.
Duct for conveying water to a given place.
an enclosed conduit for a fluid
a continuous tube formed by a row of elongated cells lacking intervening end walls
a bodily passage or tube conveying a secretion or other substance
a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance; "the tear duct was obstructed"; "the alimentary canal"; "poison is released through a channel in the snake''s fangs"
a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance
