7. Trichinella spiralis
Defining Characteristics:
“ Trichina Worms”
One of the smallest nematode
Have calcified cystic wall
Pathogenesis:
Trichinosis
IH and DH: the same
Diagnosis:
Xenodiagnosis
30. How do you differentiate morphologically
the adult forms and eggs of T. trichiura
and Capillaria?
What is the characteristic of E.
vermicularis eggs making it easily
transmissible?
How do you differentiate morphologically
the adult forms of Ascaris suum from A.
lumbricoides
Differentiate: rhabditiform, filariform and
microfilaria
31. Describe and give the function:
a. phasmids
b. amphids
c. renette
d. meromyarial muscles
e. polymyarial muscles
Describe the molting pattern of
Nematodes. Which stage is usually
infective to the host?
Why do eggs of Ascaris suum do not
readily infect humans and vice versa?