Questions and Answers
Quae est forma corporis in platyhelminthes ordine Cyclophyllidea?
Ribbon-like
Quae est characteristicum scolex in platyhelminthes ordine Cyclophyllidea?
Globular with four muscular suckers
Quae est necessitas hostium in platyhelminthes ordine Cyclophyllidea?
Intermediate host is required
Quae est species platyhelminthis ordine Pseudophyllidea?
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Quae est characteristicum segmentorum in platyhelminthes ordine Cyclophyllidea?
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Quae est species platyhelminthis ordine Cyclophyllidea?
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Quae species pulicis humano affligit?
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Quid est forma membranae Hymenolepis nana?
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Quae species vermiculi in canibus invenitur?
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Quid estcharacteristica ova Hymenolepis diminuta?
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Quae species pulicis affligit canes?
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Quae est pars corporis Hymenolepis nana quae degenerat priusquam excretio?
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Quae species vermiculi invenitur in homine?
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Quid est forma membranae Tribolium spp.?
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Quale est caracteristicum morphologicum communem Hymenolepis nana et Hymenolepis diminuta?
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Quae est differentia inter numerum segmentorum Hymenolepis nana et Hymenolepis diminuta?
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Quale est nomem communem Hymenolepis nana?
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Quae est differentia inter longitinem Hymenolepis nana et Hymenolepis diminuta?
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Quae est characteristica anatomica Hymenolepis nana?
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Quae est characteristica Hymenolepis diminuta in ciclo vitae?
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Quae est similaritas inter Hymenolepis nana et Hymenolepis diminuta?
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Quae est differentia inter oculum affectum Hymenolepis nana et Hymenolepis diminuta?
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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
