Cestode
Cestode
Cestode (pronounced: /ˈsɛstoʊd/), also known as tapeworm, is a type of parasitic flatworm belonging to the class Cestoda. The term "cestode" is derived from the Latin word "cestus", which means "girdle" or "belt", referring to the flat, ribbon-like appearance of these worms.
Anatomy
Cestodes are characterized by their elongated, flat bodies, which are segmented into a series of proglottids. The anterior end of the cestode, known as the scolex, is equipped with hooks and suckers for attachment to the host.
Life Cycle
The life cycle of cestodes involves two hosts. The adult cestode resides in the intestine of the definitive host, where it produces eggs that are passed in the host's feces. These eggs are then ingested by an intermediate host, in which they develop into larvae. The larvae migrate to various tissues in the intermediate host, where they form cysts. When the definitive host consumes the intermediate host, the larvae are released and develop into adult cestodes.
Diseases
Cestodes are responsible for a number of diseases in humans, including taeniasis and cysticercosis. Taeniasis is caused by the adult cestode residing in the human intestine, while cysticercosis results from the ingestion of cestode eggs and the subsequent development of larvae in human tissues.
Treatment
Treatment for cestode infections typically involves the use of anthelmintic drugs, such as praziquantel and albendazole. These drugs work by paralyzing the cestodes, causing them to detach from the intestinal wall and be expelled from the body.
Prevention
Prevention of cestode infections primarily involves proper food handling and cooking practices, as well as good personal hygiene. This includes thoroughly cooking meat, washing fruits and vegetables, and avoiding consumption of raw or undercooked meat.
External links
- Medical encyclopedia article on Cestode
- Wikipedia's article - Cestode
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