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13 Cards in this Set

  • Front
  • Back
Adult forms are
elongated and ribbon like flattened dorsoventrally and inhabit the intestinal tracts of hosts
Scolex; proglottids; strobilum
is the head at one end with a row of segments called ____ that originate from the head forming a chain of segments called a _____
What does it use for attachment?
scolex has grooves or bothria, sucking discs or a rostellum armed with chitinous hooks used for attachment to host tissues
Tapeworms have a ___ body thats is covered with
white; an elastic resistant tegument with microvillus like structures that is continuous from one segment to another
tegument contains
mitochondria, vacuoules, inclusion bodies and digestive enzymes
excretory canals
flame cells under the tegument that release excretement into the digestive tract
How is nutrition obtained?
through the enzymatically active integument of the proglottids by absorbing their hosts food without and internal digestive tract
Have an _____metabolism, but can function ______
anaerobic; aerobically
Nervous system
cephalic ganglia in the scolex with lateral longitudinal nerve trunks on each side on the proglottids allowing the worms to be mobile
Proglottids are
hermaphroditic. have a common genital pore that opens on the ventral surface allowing self fertilization, therefore they function as individual reproductive units
proglottids mature as new proglottids form at the head end and eventually
are released when then contain eggs
Cross-fertilize b/w
segments of the same worms or with different worms
Tapeworms have larval forms that are
solid (cysticercus), vesicular (coenurus) or bladder like (echinococcus) forming cysts in body organs