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Dissection of a crayfish: internal view of a male
Legend:
1 stomach
2 posterior gastric muscle
3 mandibular muscle
4 digestive gland
5 gills
6 antennary artery
7 three lobed testis
8 vas deferens
9 hindgut
10 abdominal extensor muscle
English name: Crayfish
Scientific name: Astacus sp.
Familia: Astacidae
Classis: Malacostraca
Phylum: Arthropoda (subphyllum Crustacea)
Regnum: Animalia
