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Cross section through an earth worm
Legend:
1 epidermis
2 circular muscle layer
3 longitudinal muscle layer
4 coelom
5 dorsal blood vessel
6 typhlosole
7 gastrodermis
8 intestinal lumen
9 nephidium canal
10 partition
11 ventral nerve chord
12 ventral blood vessel
13 subneural blood vessel
14 muscles of chaetae
English name: Earthworm
Scientific name: Lumbricus terrestris
Familia: Lumbricidae
Classis: Oligochaeta
Phylum: Annelida
Regnum: Animalia