Osculum is a large opening to the outside, in which the current of water exits after passing through the large cavity (spongocoel) of a sponge. A girl in a swimming pool full of water Water (from the Old English waeter; c. ... A spongocoel is the large, central cavity of the animals in Phylum Porifera. ... Classes Calcarea Hexactinellida Demospongiae The sponges or poriferans (from Latin porus pore and ferre to bear) are animals of the phylum Porifera. ...
The osculum is a structure in the living sponge, a large opening to the outside through which the current of water exits after passing through the spongocoel.
Water exits through the osculum at a velocity of nearly 8.5 cm/second, carrying away with it the sponge's wastes.
The size of the osculum is regulated by the myocyte.
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