Function of pinacocytes

Pinacocytes are specialized flat cells that form the outer layer of sponges, known as the pinacoderm. Their primary function is to provide protection and structural support, as well as to help regulate the flow of water through the sponge's body. By contracting and expanding, pinacocytes can adjust the size of the sponge's openings, facilitating the intake of water and nutrients. Additionally, they play a role in the sponge's overall surface area and interaction with the environment.