Introduction

• Acquired from animals

  Zoonotic
• Hexacanth embryo

  Oncosphere
• Head of a tapeworm

  Scolex
• Segment of a tapeworm

  Proglottid
• Series of proglottids

  Strobila
• Contains both male and female organs

  Hermaphroditic
• Develops from a procercoid larva and plerocercoid larvae

  Sparganum
• Free-swimming larva of D. latum: Coracidium
• Smaller cyst within a hydatid cyst

  Brood capsule
• Larval form of Taenia spp.

  Cysticercus
• This term means pregnant or egg carrying

  Gravid
• Trematodes and Cestodes are both flatworms
• Trematodes are unsegmented flatworms
• Cestodes are segmented flatworms
• What are the two groups of Cestodes?

  Cyclophyllidea and Pseudophyllidea
• Members of Platyhelminthes in general are dorso-ventrally flattened with bilateral symmetry and segmented with ribbon-like appearance.
• Usual treatment of choice

  Praziquantel
• Albendazole and mebendazole are used if what are involved?

  Cysticercosis and Hydatid Cyst
• What systems do Cestodes lack?

  Digestive and circulatory
• What structure do nutrients and wastes enter and exit the body of Cestodes?

  Proglottids
• Location of larva stages

  Tissue of intermediate host
• Location of adult worm stages

  Intestines of definitive host
• Pseudophyllidean are also known as:

  False tapeworms
• Cyclophyllidean are also known as:

  True tapeworms
• What species are false tapeworms?

  Diphyllobothrium latum and Spirometra
• What species are true tapeworms?

  Taenia spp., Dipylidium caninum, Hymenolepis, Raillietina
• Shape of false tapeworms' scolex


  Spoon-shaped or almond
• Describe suckers of false tapeworms:

  Slit-like sucking grooves
• False tapeworms suckers are also known as:

  Bothria
• Shape of true tapeworms' scolex

  Globular or pyriform
• What is present in the scolex of true tapeworms that are not present in false tapeworms?

  Rostellum
• Describe the suckers of true tapeworms:

  Four cuplike suckers
• Strobila of false tapeworms is:

  Anapolytic
• Strobila of true tapeworms is:

  Apolytic
• This term means "shredding segments"

  Apolytic
• This term means "not shredding segments"

  Anapolytic
• Recovered in stool if it is a false tapeworm

  Eggs only
• Recovered in stool if it is a true tapeworm

  Eggs and segments
• Describe the ova / egg of true tapeworms

  Spherical, non-operculated and embryonated
• Describe the ova / egg of false tapeworms

  Oval, operculated, immature with abopercular thickening