apopyle

apopyle

[′ap·ə‚pīl]
(invertebrate zoology)
Any one of the large pores in a sponge by which water leaves a flagellated chamber to enter the exhalant system.
References in periodicals archive ?
Testing of the closure of the clasper groove/tube was made by inserting a blunt tapestry needle with a coarse thread into the apopyle and through the clasper groove/tube until it came out the distal end of the clasper.
All the water vents out of the chamber through a single excurrent opening (the apopyle) into the atrial cavity (Fig.
The choanocytes of Acanthochaetetes wellsi possess a periflagellar sleeve; a central cell at the apopyle of the choanocyte chambers, as in the Hadromerida; and a spicule complement similar to that of the family Spirastrellidae in the order Hadromerida (Hartman and Goreau, 1975; Vacelet and Garrone, 1985; Reitner and Engeser, 1987; Boury-Esnault et al., 1990).