HP 9/27

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Author:
elysemelon
ID:
38211
Filename:
HP 9/27
Updated:
2010-09-28 23:07:10
Tags:
cestodes
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Description:
cestodes
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  1. phylum
    platyhelminthes
  2. class
    cestoidea
  3. orders
    • cyclophyllidea
    • pseudophyllidea
  4. common name
    tape worms
  5. adult morphology
    scolex, neck, strobila
  6. chief neural ganglia, attachment structures
    scolex
  7. muscular cups in cyclophyllideans
    acetabulate suckers
  8. muscular protrusion of scolex, armed or unarmed
    rostellum
  9. shallow grooves in pseudo
    bothriate suckers
  10. proglottids form from stem cells in neck
    strobilation
  11. most anterior proglottids are...
    sexually mature
  12. most posterior proglottids are
    gravid
  13. protandry
    male organs form first
  14. produces oocytes
    ovaries
  15. regulates passage of oocytes
    oocapt
  16. contributes to yolk and shell
    vitelline gland
  17. forms shell
    mehlis gland
  18. vitelline glands in cyclo
    compact, single
  19. vitelline glands in pseudo
    small, scattered
  20. uterus in cyclo
    ends blindly (gravid released)
  21. uterus in pseudo
    ends in uterine pore (eggs released through)
  22. cestodes have this embryo
    hexacanth
  23. cyclo embryo
    round with many layers
  24. pseudo egg
    oval, ciliated coracidium, with operculum
  25. tegument consists of
    • syncynctum
    • glycocalyx
    • distal cytoplasm
    • tegumental muscle
    • cyton layer
  26. binds host enzymes, inhibits host trypsin, chymotrypsin, and pancreatic lipase
    glycocalyx
  27. specialized microvilli
    microtriches
  28. no nuclei, vesicles present, for mantainance
    distal cytoplasm
  29. contains nuclei and organelles
    cyton layer
  30. diffused in tegument
    B vitamins
  31. actively transported through tegument
    glucose
  32. digested on contact
    enzymes intrinsic/not
  33. calcium, Mg, P, DNA, RNA, proteins and sugar for excretory products, supplying ions, and buffering
    calcareous corpuscles

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