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5 Written questions

3 Matching questions

  1. cyathostomes
  2. large strongyles
  3. onchocerca cervicalis
  1. a adults live in the nucei ligament. Females produce microfilaria that migrate to the dermis.
  2. b small strongyles.
  3. c Can interfere with blood supply to gut and cause infarction and death. Likely involved with some types of colic in horses.

5 Multiple choice questions

  1. cause irritation which leads to rubbing and scratching and hair loss. Sucking lice can lead to anemia generally in young foals.
  2. adults are large, segmented with scolex at anterior end. Up to 8 m long. Eggs are irregularly shaped and contain 6 hooked larva. Similar to monezia in ruminants.
  3. anaplocephala/paranaplocephala
  4. used to be an important zoonotic disease but not so common now due to public awareness.
  5. causes CNS signs such as ataxia, weakness, stumbling, etc. Has a complex poorly understood life cycle.

5 True/False questions

  1. chewing licemainly a winter problem. can survive 2-3 days off of the host. Lay nits on hair shaft. They are host specific and transmitted by direct contact.


  2. parascaris equorumadults are very large. Males 15-28 cm and females 50 cm long. Eggs have a spherical rough shell, dark amber to brown. Ova survives in evironment for years.


  3. chorioptic mangedamalinia equi.


  4. cyathostomesadult flies are transversely striped and look similar to bees, no mouth parts. Larvae 1-2 cmc in length, yellowish or red-brown with transverse segmentation and short bristles.


  5. oxyuris equimale adults are small 12 mm and not usually seen but females can be up to 6 inches long, pale with white pin-like tail. Ova are pale, elongated with 1 flattened side and operculum on 1 end.