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Internal Structure of Insect

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Internal Structure of Insect Digestive System Ingestion Digestion Absorption Egestion (foregut), (midgut), (hindgut) ... – PowerPoint PPT presentation

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Title: Internal Structure of Insect


1
Internal Structure of InsectDigestive System
2
  • Ingestion ? Digestion ? Absorption ? Egestion
  • ????(foregut),??(midgut),??(hindgut)
  • ??,?????, ??(intima)? ??.?? ???, ??(intima)
    ??.

3
?? 1. ??? ???
4
1.??(foregut or stomodaeum)
  • ??- ??? ??
  • ??? - ???? ??? ?????,?? ??? ?????
    (extrinsic visceral musculature) ?? ?????, ???
    ??
  • ?? ?????(proventricular spine) ? ??
    ??? ??, ??? ? ??? ???? ??.

5
2.??(midgut or mesenteron)
  • ?? - ??? ??.
  • ???? ???? ????? ?? ??? ??, ?????? ??.
  • ???(peritrophic membrane)- ??? ???? ?? ??? ??
    ??? ??.- ????? ??? ???? ??? ?? ?? ??, ??? ??.

6
?? 2. ?? ????
7
3.??(hindgut or proctodaeum)
  • ?? - ?? ???? ?? ???? ??? ???? ??. - ??,?? ?
    ????? ??? ??? ??? ??? ??? ??
  • ??- ???? ???? ??(ileum),??(colon),??(rectum)
  • ??? ??? ??????? ???? ??? ?? ??

8
4. Digestion
  • Carbohydratepolysaccharide? ?monosaccharide
  • Proteinpolypeptide ? ? ?amino acid
  • Lipidneutral fat, steroid ? ? ?
    glycerolfatty acid
  • Digestive enzyme- midgut Carboxylase,
    Proteinase, Lipase- salivary gland
    Amylase,Invertase,
    Lipase, Proteinase

9
5. Salivary gland
  • ??? ??
  • ??? ???? ?.
  • ??? ???? ??.
  • ????? ???? ????? ???? ??.
  • ??? ?? (??? ??,??).
  • ???(puparial cases) ??(???).
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