Pinacoderm

The pinacoderm is the outermost layer of body cells (pinacocytes) of organisms of the phylum Porifera (sponges), equivalent to the epidermis in other animals.

Structure

The pinacoderm is comprised of pinacocytes, flattened epithelial cells that can expand or contract to slightly alter the size and shape of the sponge.^[1] It also contains porocytes, oval-shaped cells extending from the pinacoderm to the choanoderm (the body layer containing choanocytes).

References

^ General Zoology Laboratory Guide (Fourteenth ed.). 2005. {{cite book}}: Unknown parameter |authors= ignored (help)

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[1] General Zoology Laboratory Guide (Fourteenth ed.). 2005. {{cite book}}: Unknown parameter |authors= ignored (help)

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