Visceral flukes - Echinostoma revolutum Flashcards

1
Q

Echinostomes are recognized by their:

A

circumoral collar of peg-like spines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Echinostoma is one of the most _______ termatodes

A

common/abundant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

They have _____ host specificity

A

low

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Circumoral collar bears __ spines in a ______

A

37

double circle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Eggs

A

Only a few in uterus at a time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

_____ eggs are passed from the definitive host with ____ and must reach ____ for further developement

A

Operculated
feces
water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Eggs are _______; it takes ____ for miracidium to develop in water before it hatches and penetrates a snail

A

non-embryonated
2-5 wk
miracidium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How many sporocyst and radial generations develop in the snail

A

1 sporocyst

2 redia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Cercaria exit rediae and infect:

A

mollusks, fish, tadpoles

Then trasform into metacercaria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Any definitive host gets infected

A

When they eat mollusks or fish

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Metacercaria excyst in the ____________

A

small intestine where they become adults

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

heavy infections may produce

A

echinostomiasis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

characteristics of echinostomiasis

A

inflammation and mild ulceration, with diarrhea and abdominal pain, and anemia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Diagnosis:

A

eggs in feces: dark brown, developing zygotes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Treatment

A

Praziqunatel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Prevention and control

A

Due to large # of primary & secondary hosts, it’s impossible to control it. Infections can be prevented if food is cooked