Tapeworm Phyla
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Questions and Answers

Quae est forma corporis in platyhelminthes ordine Cyclophyllidea?

  • Spatulata
  • Ribbon-like (correct)
  • Cylindrica
  • Globular

    • Quae est characteristicum scolex in platyhelminthes ordine Cyclophyllidea?

  • Ribbon-like with genital pores
  • Globular with four muscular suckers (correct)
  • Spatulata with bothria
  • Cylindrica with uterine pores

    • Quae est necessitas hostium in platyhelminthes ordine Cyclophyllidea?

  • Intermediate host is required (correct)
  • Middle host is required
  • No host is required
  • Final host is required

    • Quae est species platyhelminthis ordine Pseudophyllidea?

    <p>Diphyllobothrium latum</p> Signup and view all the answers

    Quae est characteristicum segmentorum in platyhelminthes ordine Cyclophyllidea?

    <p>Genital pores and uterine pores</p> Signup and view all the answers

    Quae est species platyhelminthis ordine Cyclophyllidea?

    <p>Taenia saginata</p> Signup and view all the answers

    Quae species pulicis humano affligit?

    <p>Pulex irritans</p> Signup and view all the answers

    Quid est forma membranae Hymenolepis nana?

    <p>Elongated</p> Signup and view all the answers

    Quae species vermiculi in canibus invenitur?

    <p>Dipylidium caninum</p> Signup and view all the answers

    Quid estcharacteristica ova Hymenolepis diminuta?

    <p>Motile, white, and rice-grain like</p> Signup and view all the answers

    Quae species pulicis affligit canes?

    <p>Ctenophalides canis</p> Signup and view all the answers

    Quae est pars corporis Hymenolepis nana quae degenerat priusquam excretio?

    <p>Proglottids</p> Signup and view all the answers

    Quae species vermiculi invenitur in homine?

    <p>Hymenolepis nana</p> Signup and view all the answers

    Quid est forma membranae Tribolium spp.?

    <p>Spherical</p> Signup and view all the answers

    Quale est caracteristicum morphologicum communem Hymenolepis nana et Hymenolepis diminuta?

    <p>Cuplike suckers quartuor</p> Signup and view all the answers

    Quae est differentia inter numerum segmentorum Hymenolepis nana et Hymenolepis diminuta?

    <p>1000-2000 segmenta in Hymenolepis diminuta</p> Signup and view all the answers

    Quale est nomem communem Hymenolepis nana?

    <p>Dwarf tapeworm</p> Signup and view all the answers

    Quae est differentia inter longitinem Hymenolepis nana et Hymenolepis diminuta?

    <p>25 to 45 mm in Hymenolepis nana</p> Signup and view all the answers

    Quae est characteristica anatomica Hymenolepis nana?

    <p>Scolex subglobularis</p> Signup and view all the answers

    Quae est characteristica Hymenolepis diminuta in ciclo vitae?

    <p>Singly apolysis</p> Signup and view all the answers

    Quae est similaritas inter Hymenolepis nana et Hymenolepis diminuta?

    <p>Both have 4 cuplike suckers</p> Signup and view all the answers

    Quae est differentia inter oculum affectum Hymenolepis nana et Hymenolepis diminuta?

    <p>Ophthalmic cysticercosis in Hymenolepis nana</p> Signup and view all the answers

    Study Notes

    Cyclophyllidean vs. Pseudophyllidean

    • Corpora ribbon-like, flat,-middle (intermediate host is required)
    • Scolex: spatulated with bothria (Pseudophyllidean), globular with four muscular suckers (Cyclophyllidean)

    Pseudophyllidean

    • Familia: A. Pseudophyllidea
    • Genera: Diphyllobothrium, Spirometra (S. erinacei, S. mansoni, S. ranarum)
    • Segments: with genital pores and uterine pores

    Cyclophyllidean

    • Familia: B. Cyclophyllidea
    • Genera: Taenia, Hymenolepis (H. nana, H. diminuta), Dipylidium, Raillietina
    • Segments: without uterine pores, undergoes apolysis, two membranes: outer and inner

    Diagnosis

    • Demonstratio ovorum in stercore
    • Light infection: concentratio stercore on alternate days, examinatio stercore repeated after 2 weeks
    • Nota: Hymenolepis nana: proglottids are not recovered, undergo degeneration prior to passage with stools; Hymenolepis diminuta: at time whole worm is expelled

    Characteristics of Worms

    • Dipylidium caninum: recovery of gravid segments
    • Raillietina garrisoni: recovery of gravid segments
    • Ova: subspherical with a brown radially striated embryophore, cannot be differentiated from Taenia eggs

    Hymenolepis Nana vs. Hymenolepis Diminuta

    • Nomen commune: Dwarf tapeworm (Hymenolepis nana), Rat tapeworm (Hymenolepis diminuta)
    • Longitudo: 25-45 mm (Hymenolepis nana), 60 mm (Hymenolepis diminuta)
    • Apolysis: in chains (Hymenolepis nana), singly (Hymenolepis diminuta)
    • Number of eggs/gravid proglottid: 30,000-50,000 (Hymenolepis nana), 80,000 (Hymenolepis diminuta)
    • Egg: 31-56 micra in diameter with oncosphere

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    Description

    Cyclophyllidean et Pseudophyllidean, caracteristici corporis, hospites et organis systematum

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