Cetodes (Tapeworms)

Front 1

Adult forms are

Back 1

elongated and ribbon like flattened dorsoventrally and inhabit the intestinal tracts of hosts

Front 2

Scolex; proglottids; strobilum

Back 2

is the head at one end with a row of segments called ____ that originate from the head forming a chain of segments called a _____

Front 3

What does it use for attachment?

Back 3

scolex has grooves or bothria, sucking discs or a rostellum armed with chitinous hooks used for attachment to host tissues

Front 4

Tapeworms have a ___ body thats is covered with

Back 4

white; an elastic resistant tegument with microvillus like structures that is continuous from one segment to another

Front 5

tegument contains

Back 5

mitochondria, vacuoules, inclusion bodies and digestive enzymes

Front 6

excretory canals

Back 6

flame cells under the tegument that release excretement into the digestive tract

Front 7

How is nutrition obtained?

Back 7

through the enzymatically active integument of the proglottids by absorbing their hosts food without and internal digestive tract

Front 8

Have an _____metabolism, but can function ______

Back 8

anaerobic; aerobically

Front 9

Nervous system

Back 9

cephalic ganglia in the scolex with lateral longitudinal nerve trunks on each side on the proglottids allowing the worms to be mobile

Front 10

Proglottids are

Back 10

hermaphroditic. have a common genital pore that opens on the ventral surface allowing self fertilization, therefore they function as individual reproductive units

Front 11

proglottids mature as new proglottids form at the head end and eventually

Back 11

are released when then contain eggs

Front 12

Cross-fertilize b/w

Back 12

segments of the same worms or with different worms

Front 13

Tapeworms have larval forms that are

Back 13

solid (cysticercus), vesicular (coenurus) or bladder like (echinococcus) forming cysts in body organs