Lumbriculus variegatus

1
Lumbriculus variegatus Cross-section through a
worm near its tail end. Labels E dorsal
epidermis(Note the absence of a muscle layer
directly above dorsal blood vessel in the
tail)M muscle layer of body wall DBV dorsal
blood vessel IN intestine L lateral giant
fiber within ventral nerve cord VNC ventral
nerve cord CC coelomic cavity
IN
CC
VBV
VNC
2
LumbriculusvariegatusCross-sections through
worms ventral nerve cord Top panel shows
section from anterior region. Bottom panel
shows section from posterior region. LabelsL
lateral giant nerve fiber M medial giant nerve
fiber N neuropil
N
N