Pinacocyte

Pinacocytes are flat cells found on the outermost layer (Pinacoderm) of a sponge (phylum Porifera).

Function

Pinacocytes line the incurrent canals and spongocoel. They maintain the size and structure of the sponge through slight expansions and contractions.

There are three types of pinacocytes:

These are the cells in contact with the sponge's substrate (the surface to which it is attached).

These are found on the exterior of the sponge.

These line the sponge's interior canals.

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