Starfish

1
Starfish

• dissection

By Carol Parker
Thanks to Denise Roper and Lynn Fink
2
Dried Specimens
3
Common StarfishClass Asteroidea
Aboral view
4
trivium
bivium
5

anterior arm
central disc
arms
6
Madreporite
7
bivium
madreporite
stone canal
trivium
8
madreporite
stone canal
peristome
9
radial canal
circular canal
peristome
10
Arms
Oral view
Ambulacral Grooves
Mouth
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Spines
Tube feet
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Preserved Specimens
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madreporite
anterior arm
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bivium
central disk
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ambulacral grooves
mouth
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mouth
tube feet
peristome
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pyloric stomach
intestine
anus
intestinal caecum
18
pyloric stomach
pyloric caecum
pyloric duct
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Pyloric stomach
Pyloric caecum
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Pyloric stomach
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Pyloric caecae
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Gonads
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Cardiac stomach
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cardiac stomach
peristome
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Cardiac stomach
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circular canal
ampulla
polian vesicle
radial canal
27
ampulla
tube feet
radial canal