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 composed 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).
gollark: Two raised eyebrows and an unraised eyebrow in the middle.
gollark: ↑↑ is clearly "raised eyebrows which are also dripping blood oh bees oh bees what is going on".
gollark: But not with pronouny!
gollark: the supreme overlord of all, master of all space and time, destroyer of worlds, devourer of souls/the supreme overlord of all, master of all space and time, destroyer of worlds, devourer of souls/the supreme overlord of all, master of all space and time, destroyer of worlds, devourer of souls's/the supreme overlord of all, master of all space and time, destroyer of worlds, devourer of souls's/the supreme overlord of all, master of all space and time, destroyer of worlds, devourer of souls is quite long.
gollark: <@241757436720054273> But then you can't subscribe to each other's pronouns. Or have multiple. Really, that's only good as a sort of weird reference book.
References
- Charles F. Lytle and John R. Meyer (2005). General Zoology Laboratory Guide (Fourteenth ed.).CS1 maint: uses authors parameter (link)
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