-
Nematodes are also called ________.
roundworms
-
According to a parasites needs for a host, nematodes are ______.
free-living or facultative parasites of humans, animals or plants.
-
Namely the general features of a nematodes are
Shape :
Color :
- ★Roundworms or nematodes are cylindrical and they are unsegmented.
- ★flesh colored bodies.
*Remember that they are the only cylindrical helminths.*
-
Namely the general features of a nematodes are
Distinction of their body:
Their body is usually -
- posterior end is pointed
- anterior end is rounded
-
Namely the general features of a nematodes are
Another feature of nematode that makes it distinct is their body covering.
Nematodes are the only helminths that is covered with ______ as their body covering.
Unlike cestodes (tapeworm) and trematodes (fluke) which are both covered with tegument,
nematodes are covered with cuticle which gives its flesh-like color.
-
Namely the general features of a nematodes are
Describe the digestive system of the nematode.
They are the only helminth which has a complete digestive tract: with mouth, esophagus, midgut and anus.
-
Namely the general features of a nematodes are
Describe the sex classification of nematodes.
All are dioecious or have separate male and female in a single organism. Where the female is larger than the male.
-
One could be infected by a roundworm through
- ★ ingestion of uncooked meat with larvae in it
- ★ entrance directly through skin or cut
- ★ or by transfer via blood sucking insects (mosquito, kissing bug,triatoma)
-
Nematodes are classified into 2 main categories base on their primary ______.
a.
b.
location
- a.intestinal
- b.tissue (filariae)
*Filariae are nematodes (roundworms)*
-
A. Intestinal nematodes are the following:(give atleast 3)
- 1.Enterobius vermicularis
- 2.Ascaris lumbricoides
- 3.Strongyloides stercoralis
- 4.Hookworm: ancylostoma duodenal and necator americanus
- 5.Trichuris trichiura
- 6.Trichinella spiralis
-
A. Main feature of intestinal nematodes.
Size
Shape
- They are larger in size and
- of course they are cylindrical (roundworms).
-
A. Main feature of intestinal nematodes.
They are mostly diagnosed through what method?
Stool examination.
By identifying their characteristic egg in stool.
-
A. Main feature of intestinal nematodes.
At what developmental stage of nematodes live in the intestinal tract?
Most adult worms live in the intestinal tract.
-
A. Tissue nematodes are classified according to their habitat.
What are the areas where which this filariae form could be found.(2)
I.
II.
*Remember that tissue nematodes (filariae) could be transferred via blood-sucking insect that is infected with the nematode egg.*
-
What are the lymphatic filariae,tissue nematodes?
- Wucheria bancrofti
- Brugia malayi
-
What are the cutaneous filariae, tissue nematodes?
- Dracunculus medinensis
- Loa loa
- Onchocerca volvulus
-
A. Main feature of tissue nematodes.
Size
Shape
-
A. Main feature of tissue nematodes.
Habitat of tissue nematodes are either in the _______ or ________.
lymph vessel or cutaneous tissue
-
A. Main feature of tissue nematodes.
What method is used to diagnose a tissue nematode?
More likely by demonstrating microfilariae in blood or tissue or tissue flood.
-
The following are intestinal nematodes important to man.
What is the disease caused by these.
Ascaris lumbricoides
ascariasis
-
The following are intestinal nematodes important to man.
What is the disease caused by these.
Trichinella spiralis
trichinosis trichinellosis
-
The following are intestinal nematodes important to man.
What is the disease caused by these.
Trichuris trichiura
trichuriasis
-
The following are intestinal nematodes important to man.
What is the disease caused by these.
Enterobius vermicularis
enterobiasis/ oxyyuriasis
-
The following are intestinal nematodes important to man.
What is the disease caused by these.
Strongyloides stercoralis
cochin-china diarrhea
-
Intestinal nematodes and their common names.
ascaris lumbricoides
giant intestinal roundworm
-
Intestinal nematodes and their common names.
Trichinella spiralis
trichina worm
-
Intestinal nematodes and their common names.
Trichuris trichiura
whipworm
-
Intestinal nematodes and their common names.
Enterobius vermicularis
pinworm or seatworm
-
Intestinal nematodes and their common names.
strongyloides stercoralis
threadworm
-
Intestinal nematodes and their common names.
Ancylostoma duodenale
necator americanus
hookworms
|
|
