Crayfish: Digestive and Excretory Systems
1 Esophagus
12 Green gland
4 Proventriculus
(stomach)
2 Gastric
mill
3 Mill
chamber
13 Bladder
of green gland
7 Digestive cecae
8 Intestine
(hindgut)
14 Opening
of green gland
11 Mouth
10 Mandible
9 Anus
6 Midgut
5 Filter chamber
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