Changes

[[Image:Soybean cyst nematode EM.jpg|thumb|right|150px|Soybean Cyst Nematode and Egg, Scanning Electron Micrograph - Wikimedia Commons]]

[[Image:Soybean cyst nematode EM.jpg|thumb|right|150px|''Soybean Cyst Nematode and Egg, Scanning Electron Micrograph'' - Wikimedia Commons]]

The term helminth is commonly used to describe parasitic worms, all with eukaryotic cell structures. The two main groups are the '''Nematodes''' (roundworms) and the '''Platyhelminthes''' (flatworms).[[Image:729px-Soybean cyst nematode and egg SEM.jpg|thumb|right|100px|Soybean cyst nematode and egg]]

The term helminth is commonly used to describe parasitic worms, all with eukaryotic cell structures. The two main groups are the '''Nematodes''' (roundworms) and the '''Platyhelminthes''' (flatworms).

*'''Nematodes''': typically long and slender, the nematodes are dioecious (male and female individuals) and are generally found attached to the intestinal wall

*'''Nematodes''': typically long and slender, the nematodes are dioecious (male and female individuals) and are generally found attached to the intestinal wall

**Hookworms- widely endemic in the tropics, hookworms hatch on soil and enter the host through the feet. Pathogenesis involves intestinal irritation and haemorrhage.  

**Hookworms- widely endemic in the tropics, hookworms hatch on soil and enter the host through the feet. Pathogenesis involves intestinal irritation and haemorrhage.  

**Pork worm- found worldwide, pork worms can infect most carnivorous animals, causing trichinosis.  

**Pork worm- found worldwide, pork worms can infect most carnivorous animals, causing trichinosis.  

**Filarial worms- various species found in tropical and subtropical areas depending on distribution of insect vectors, causes allergic reactions and potentially blindness

**Filarial worms- various species found in tropical and subtropical areas depending on distribution of insect vectors, causes allergic reactions and potentially blindness

*'''Platyhelminthes'''[[Image:Tenia solium scolex.jpg|thumb|right|100px|Scolex, with hooks, of ''T. solium'' tapeworm]]

*'''Platyhelminthes'''[[Image:Tenia solium scolex.jpg|thumb|right|100px|''Scolex, with hooks, of T. solium tapeworm'' Hubert 1891, WikiMedia Commons]]

**Trematodes- commonly known as the 'flukes,' trematodes are non-segmented and have alternate sexual and non-sexual generations in different hosts. They are mostly hermaphroditic except the blood flukes, which are dioecious.

**Trematodes- commonly known as the 'flukes,' trematodes are non-segmented and have alternate sexual and non-sexual generations in different hosts. They are mostly hermaphroditic except the blood flukes, which are dioecious.

**Cestodes- commonly known as the 'tapeworms,' these consist of an enlarged head section ('scolex'), with suckers or hooks for attachment in the intestine and successive flat segments forming a chain of 'proglottids'[[Category:Helminths]]

**Cestodes- commonly known as the 'tapeworms,' these consist of an enlarged head section ('scolex'), with suckers or hooks for attachment in the intestine and successive flat segments forming a chain of 'proglottids'

 

[[Category:Helminths]]

 

[[Category:To_Do_-_Parasites]]