Atlas of Animal Anatomy and Histology
Annelids (Annelida)
Dorsal view of a live earthworm
Ventral view of the anterior end of an earthworm
Ventral view of an earthworm
Cross sections of the body wall of the earthworm (Azan)
Cross sections of the body wall of the earthworm (left: Azan, right: HE)
Holding the worm in one hand, make a small slit in the body-wall in the middorsal line
Cut forwards as far as the prostomium keeping the points of the scissors well up
The anterior end with the finished dorsal cut before pinning out
Place pins in pairs as nearly opposite to one another as possible starting from the anterior end
Opened and pinned out earthworm (before the water cover)
The internal structure of an earthworm (the specimen is completely covered with water)
Organs in the anterior end of an earthworm
The mid-gut (pulled partly to the left) and the underlying ventral nervecord
Histological sections of the digestive, circulatory and excretory systems (HE)
Histological sections of the digestive, circulatory and excretory systems (left: HE, right: Azan)
The dissected anterior end of the ventral nervecord
Histological cross sections and a longitudinal section (right) of the ventral nerve cord
Histological cross sections of the ventral nerve cord
Structures of the male part of the reproductive system
Histological sections of the reproductive system (HE)
Histological sections of the reproductive system (HE)