Worms

Question 1

Cestodes (tapeworms) characteristics

Answer 1

Segmented
Have proglottids
No body cavity(coelem)
No circulatory or respiratory system
No alimentary canal
Hemaphrodite
Flame cells excretory system

Question 2

(Cestodes )Tapeworms types

Answer 2

•Taenia solium:pork tapeworm ,causes intestinal tapeworm(praziquantel),
neurocysticercosis(bendazole)

•Taenia saginata:beef tapeworm causes
Intestinal tapeworm (praziquantel)

•Diphylobatrium latum: fish tapeworm
Causes b12 deficiency and intestinal tapeworm (proziquentel)

•Echinococus granulosus :dog tapeworm affects liver ,lung and brain =hydration cysts(bendazole and surgical cyst removal)

Question 3

Trematodes flukes features

Answer 3

Leaf like
No body cavity
Exit or endo parasite
Non segmented
Paired testes (scepter schistosomes vary in Number )
Single ovary

Question 4

Schistosomiasis (trematodes)

Answer 4

Snail fever ,katayama fever, bilharziasis
Chronic parasitic disease caused by blood flukes ( trematodes) of the genus schistosoma transmitted to humans through snails

TYPES
•schistosoma hematobium (terminal s) Urogenital

•Schistosoma mansoni (lateral spine) Intestine

•Schistosoma japonicum(minutely spine) Intestine

Schistosoma intercalatum (terminal)
Schistosoma mekongi(minutely)

Question 5

Schistosoma risk factors and features

Answer 5

RISK FACTORS
•swimming in lakes infested with snails
•Fishing in infested water
•Washing of clothes in infested water bodies

CLINICAL FEATURES
•Low grade fever
•Weight loss
•Fatigue
•Anemia
*Intestinal: abd pain, diarrhea , liver enlarged
*Urogenital: terminal hematuria , dysuria
*Females : genital lesions , vaginal bleed

Question 6

Schistosoma complication and tx

Answer 6

•intestinal:
Liver fibrosis
Colon cancer
Portal hypertension
Malnutrition
Esophageal varies

Urogenital:
Bladder cancer
Cystitis
Infertility
Renal failure
Anemia

Tx
All:proziquental
Hematobium: metriphonate
Mansoni:oxamniquine

Question 7

Match

Answer 7

Laosis- chrysops flies

Leishmaniasis-sandflies
African trypanosomiasis-tse tse flies
American trypanosomiasis- triaging (kissing bug )
Onchocerciasis- stimulus spp
Lymphatic filariasis- culex mosquito

Question 8

Trichinosis

Answer 8

Muscle pain
Eosinophilia
Facial edema
Gi upset