5 Written Questions

1. organophosphate
2. inhibit cholinesterase activity, cause ACh to remain active in the neuromuscular junction of the parasite (neurotoxic to parasites)
3. monthly topical flea and tick preventative, demodex and sarcoptes on dogs ONLY
4. imidazothiazole, used more often in cattle
5. mimic the action of ACh and cause paralysis of the worm

5 Matching Questions

1. ivermectin (used for)
2. Taenia is spread by _______________
3. milbemycin (Sentinel/Interceptor)
4. Echinococcus
5. pyrimethamine (mechanism)

1. a tapeworm carried by birds that causes cysts in the brain and other organs
2. b once monthly oral preventative (HW), used to prevent third stage larvae from reaching maturity, also a microfilaricide
3. c inhibits an enzyme that converts a folic acid used for metabolism in parasites to be inactive
4. d heartworm prevention (Heartgard, Ivomec) (once monthly oral preventative), microfilaricide (50mcg/kg)
5. e hunting/ingesting prey

5 Multiple Choice Questions

1. flea preventative; prevents flea eggs from hatching
   1. lufenuron (Program, also in Sentinel)
   2. chlorsulon (effective against)
   3. pyrantel tartrate (Strongid/Nemex)
   4. morantel tartrate (Strongid/Nemex)
2. blocks neuromuscular transmission in the parasite
   1. albendazole (mechanism)
   2. avermectins (mechanism)
   3. pyrimethamine (mechanism)
   4. piperazine (mechanism)
3. works by inhibiting the trematode's enzyme systems
   for energy production
   1. avermectins (mechanism)
   2. chlorsulon (effective against)
   3. piperazine (mechanism)
   4. chlorsulon (mechanism)
4. monthly topical flea preventative; do NOT use on cats
   1. pyrimethamine (used for)
   2. pyrethrin/permethrins (BioSpot, ProTicCall)
   3. pyriproxyfen (Vetra)
   4. pyrimethamine (side effects)
5. treatment of equine protozoal myeloencephalitis
   1. pyriproxyfen (Vetra)
   2. piperazine (mechanism)
   3. pyrimethamine (side effects)
   4. pyrimethamine (used for)

5 True/False Questions

1. epsiprantel (Cestex) (effective against) → disintegrates the cestode

   True        False

2. diethylcarbamazine → flea preventative; insect growth regulator; prevents molting,
   mimics juvenile hormone of parasite, no adult kill

   True        False

3. pyriproxyfen (Vetra) → flea preventative; insect growth regulator; prevents molting,
   mimics juvenile hormone of parasite, no adult kill

   True        False

4. fenbendazole (Panacur) → benzimidazole

   True        False

5. metaflumizone (Promeris) → monthly topical flea preventative; paralyzes fleas, does not kill eggs

   True        False