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Dissection of a crayfish: internal view of a male

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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

http://www.vcbio.science.ru.nl/en/image-gallery/show/AN0079/print/

last modified: 5 Jun 2014