eukaryota		Pleated tube or vase shape
myocyte		Channels leading to the interior through the mesohyl
endoskeleton		The cylindrical or conical collar surrounding a flagellum
calcarea		The tail-like structure that projects from the cell body and is used to move water through the sponge body
animalia		Female reproductive cell
lophocyte		In addition to or instead of sclerocytes, demosponges have "blank" that secrete a form of collagen that polymerizes into spongin
archeaeocyte		Silica spicules, never has spongin fibres
collencyte		Tube or vase shape
spongin		Male reproductive cell
mesohyl		Internal support structure
ostia		Means "little mouth"
flagellum		Green algae are this to some sponges
syconoid		Phylum
porifera		No spongin, may have an asconoid, syconoid or leuconoid body shape
rhabdiferous		Tubular cells which make up the pores of a sponge
sclerocyte		Domain
hexactinellida		Conduct signals and cause parts of the animal to contract
demospongia		The gelatinous matrix within a sponge
osculum		Another type of collagen-producing cell
endosymbiont		The single-layered skin over all the parts of the mesohyl not used by porocytes
oocyte		The process by which sclerocytes produce silica spicules
spicule		External skeleton
exoskeleton		Ameba-like cells that are totipotent
choanocyte		Secrete polysaccharides that also form part of the mesohyl
biomineralisation		Exaggerated syconoid shape
grey cell		Act as the immune system
pinacocyte		A type of collagen protein that forms some sponges fibrous skeleton
porocyte		Kingdom
spongocyte		Many species contain spongin fibres
spermatocyte		Secrete the mineralized spicules
leuconoid		Tiny spike-like structures
asconoid		Amoeba-like cells that move slowly through the mesohyl and secrete collagen fibres