Figures 3.7


Mediolongitudinal section of an immature cockroach of Periplaneta americana (Blattodea: Blattidae) showing internal organs and tissues.
Figures 3.7. Mediolongitudinal section of an immature cockroach of Periplaneta americana (Blattodea: Blattidae) showing internal organs and tissues.
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  The central nervous system of various insects showing the diversity of arrangement of ganglia in the ventral nerve cord.
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  The main endocrine centers in a generalized insect.