OVA

• What do you call the outer layer of the cestode's ova?

  Embryophore
• Can you describe the SHAPE of the EMBRYOPHORE of Taenia spp.?

  spherical
• Can you describe the SHAPE of the EMBRYOPHORE of Echinococcus spp.?

  spherical
• Can you describe the SHAPE of the EMBRYOPHORE of Hymenolepis spp.?

  spherical
• Can you describe the SHAPE of the EMBRYOPHORE of Dipylidium spp.?

  Spherical
• Thick-shelled: thickness of the embryophore of Taenia spp.
• Thick-shelled: thickness of the embryophore of Echinococcus spp.
• Thin-shelled: thickness of the embryophore of Hymenolepis spp.
• Thin-shelled: thickness of the embryophore of Dipylidium spp.
• Brown and striated: describe the color and appearance of the embryophore of Taenia spp.
• Colorless or clay: describe the color and appearance of the embryophore of Hymenolepis spp.
• Comes in CAPSULES: describe the appearance of the embryophore of Dipylidium spp.
• the embryo inside the ova is also known as what?

  oncosphere
• Hexacanth: oncosphere of Taenia spp.
• Hexacanth: oncosphere of Echinococcus spp.
• What species has a HEXACANTH embryo with POLAR THICKENINGS?

  Hymenolepis spp.
• Hexacanth: oncosphere of Dipylidium caninum
• Oval: shape of the outer layer of D. latum and spirometra spp.
• Thick-shelled: thickness of D. latum and spirometra spp.
• Describe the embryo of D. latum and Spirometra spp?

  Undeveloped coracidium
• Give the other 2 structures present in D.latum and spirometra spp.?

  Inconspicuous OPERCULUM and Small terminal knob
• Label.

  A) 3 pairs of hooklets

  B) Hexacanth embryo

  C) Radial striations of yellow-brown embryophore

  
• Label.

  A) Filaments emerged from polar thickenings

  B) colorless embryophore

  C) Hexacanth embryo

  D) Three pairs of hooklets

  
• Label.

  A) Hexacanth embryo

  B) Colorless embryophore

  C) 3 pairs of hooklets

  D) Polar thickenings

  
• Label.

  A) Six-hooked onconoscophere

  B) 5-30

  
• Label.

  A) Operculum

  B) Terminal knob

  C) coracidium

  
• Terminal knob is also known as what?

  abopercular knob
• What is this?

  Taenia spp. and Echinococcus spp. OVA

  
• What is this?

  Hymenolepis nana OVA

  
• What is this?

  Hymenolepis diminuta OVA

  
• What is this?

  Dipylidium caninum OVA

  
• What is this?

  Diphyllobothrium latum and Spirometra spp. OVA