Internal anatomy of an earthworm (cross
: small, long, cylindrical animal without legs or hard body
: outer part of the skin.
Dorsal blood vessel
: blood vessel situated in the rear part of
: muscular tissue that runs lengthwise on
: circular muscular tissue of an earthworm.
: digestive tract of an earthworm.
Ventral blood vessel
: blood vessel situated in the front part
of an earthworm.
: more or less empty part of an earthworm.
: fin thread secreted by an earthworm.
Ventral nervous cord
: set of nerves in the abdomen of an earthworm.
: organ of an earthworm that performs the functions