2nd long

• what class do tape-like body worms belong

  cestoda
• true or false. class cestoda has alimentary canal

  false
• class cestoda has a wide variation of length ranging from ?

  to ?

  few millimeters to several meters
• each segment of the cestodas body contains how many sets of reproductive organs?

  1-2 sets of female and male Reproductive organs
• Almost all the tapeworms of veterinary importance are in what order?

  Order Cyclophyllidea
• segmentation of cyclophyllidea

  prominent
• segmentation of pseudophyllidea

  indistinct
• eggs of cyclophyllidea

  non- operculated
• eggs of pseudophyllidea

  operculated
• scolex of cyclophyllidea

  with suckers(acetabula)
• scolex of pseudophyllidea

  false suckers
• false suckers of pseudophyllidea is also called as?

  bothria
• infective stage on cyclophyllidea

  hexacanth embryo
• infective stage on pseudophyllidea

  coracidium
• infective stage of class cestoda occurs on what IH?

  1st IH
• egg shedding of cyclophyllidea

  via thysanus
• egg shedding of pseudophyllidea

  via uterine pore
• An adult cestode consists of a globular head or scolex bearing attachment organs, a short unsegmented neck and a chain of segments. true or false

  true
• the chain of cestodes is known as

  strobila
• each segment of a strobila is called?

  proglottid
• true or false. The proglottids are continuously budded from the neck region and become sexually mature as they pass down the strobila to the distal end of the tapeworm

  true
• true or false. As the segment matures, its internal structure largely disappears and the fully ripe or gravid proglottid becomes packed with eggs

  true
• fertilized eggs are normally released by the parasite through the disintegration of the uterus, we call the process what?

  apolysis
• apolysis is a greek word for what?

  discharge
• Some species normally release their eggs through the uterine pore, and when the uterus becomes exhausted, it falls of. This process is called what?

  pseudoapolysis
• a fully embryonated egg consists of a delicate shell, embryophore, oncosphere or hexacanth
• A thick, dark, radially striated shell

  embryophore
• how many hook does an oncosphere has?

  6
• this is lost while inside the parasite

  delicate shell
• Tapeworms derive all of their nourishment through their tegument which is highly absorptive
• adult tapeworm is found in the small intestine of the final host
• When ingested, the secretions of the GIT will break down the embryophore and activate the oncosphere
• Using its hooks, it tears through the mucosa to reach the blood or lymph stream in vertebrates and body cavity in cases of invertebrates
• larval stages of cestodes are called?

  metacestodes
• They are solid-bodied with hooks on their posterior region. This usually precedes the plerocercoid form

  Procercoid

  
• Elongated and solid-bodied.

  Plerocercoid

  
• Plerocercoid occurs on what IH

  2nd IH
• A single evaginated scolex embedded in a small solid cyst.

  cysticercoid

  
• cysticeroid is usually found on what kind of IH

  arthropods
• Single fluid-filled cyst containing a single invaginated scolex, sometimes called a protoscolex.


  cysticercus