Cestodes (Helminths)

Question	Answer
Example Species	Taenina solium
Description	Flat, segmented worms
Scolex	Structure than contains hook and suckers but no mouth
Middle Segments	Contain male and female sex organs
Distal segments	Contain eggs, which cause segment to be shed
Life Cycle- Consumption	Human consumed infected meat and scolex of cysterci attaches it to wall of S.I
Life Cycle- Cysticercosis	Where eggs enter the deep tissues and cause a variety of symptoms
Life Cycle- Excretion	Segments containing eggs are shed into feces and excreted
Life Cycle- Cattle/Pigs	Eggs in soil are taken up by cattle/pigs, and lose outer shell
Life Cycle- Pig Intestine	Eggs hatch and hooks latch onto intestine
Life Cycle- Pig Muscle	Worms migrate into muscle and form cysterci
Symptoms	Usually non-specific and abdominal
Symptoms (Cysicercosis)	Vary greatly, eye damage, cysterci calcification in muscle/brain = seizures and paralysis

Resource summary

	Created by gina_evans0312 over 10 years ago