any one give me morphologi tapeworm note
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In biology, tapeworms or cestodes comprise a class (Cestoda) of ribbon–like endoparasitic flatworms that live in the digestive tract of vertebrates as adults and often in the bodies of various animals (intermediate hosts) as juveniles.
Among the most common tapeworms in humans are the pork tapeworm, the beef tapeworm, the fish tapeworm, and the dwarf tapeworm. Infections involving the pork and beef tapeworms are also called taeniasis.
Tapeworm infestation, being tied to the human diet, are preventable diseases, avoidable through responsible actions of individuals and societies. Preventive measures include proper cooking of meat, such as beef, pork, and fish and proper means of dealing with human and animal wastes. Eating of sushi (raw fish) requires careful procedures for preparation.
Adult tapeworms typically have the same body structure consisting of a scolex, sometimes colloquially referred to as the "head," a neck and a strobila made of a few to large number of proglottids, which are sometimes called "segments." These parasites are given the name "tapeworm," because their strobila look like a strip of tape.
The pre-digested food in the host's small intestine is the chief source of nourishment for tapeworm. The general body surface of the parasite is greatly increased by the presence of microvilli. Therefore, the swift efficiency with which absorption takes place can be compared with the soaking action of blotting paper.
The parasites lack respiratory organs as well, with respiration of the tapeworms being mainly anaerobic or anoxybiotic, with glycolysis being the chief respiratory pathway. When oxygen become available, the general body lining works as the respiratory surface.
All cestodes have nerve rings and lateral nerve cords passing through outthe length of the body. Their main excretory units are protonephric flame cells scattered all over the parenchyma of the body. The filtered excretory material is emptied into lateral longitudinal excretory canals extending the whole length of the body and thrown out through excretory pore at the end of the body.
Among the most common tapeworms in humans are the pork tapeworm, the beef tapeworm, the fish tapeworm, and the dwarf tapeworm. Infections involving the pork and beef tapeworms are also called taeniasis.
Tapeworm infestation, being tied to the human diet, are preventable diseases, avoidable through responsible actions of individuals and societies. Preventive measures include proper cooking of meat, such as beef, pork, and fish and proper means of dealing with human and animal wastes. Eating of sushi (raw fish) requires careful procedures for preparation.
Adult tapeworms typically have the same body structure consisting of a scolex, sometimes colloquially referred to as the "head," a neck and a strobila made of a few to large number of proglottids, which are sometimes called "segments." These parasites are given the name "tapeworm," because their strobila look like a strip of tape.
The pre-digested food in the host's small intestine is the chief source of nourishment for tapeworm. The general body surface of the parasite is greatly increased by the presence of microvilli. Therefore, the swift efficiency with which absorption takes place can be compared with the soaking action of blotting paper.
The parasites lack respiratory organs as well, with respiration of the tapeworms being mainly anaerobic or anoxybiotic, with glycolysis being the chief respiratory pathway. When oxygen become available, the general body lining works as the respiratory surface.
All cestodes have nerve rings and lateral nerve cords passing through outthe length of the body. Their main excretory units are protonephric flame cells scattered all over the parenchyma of the body. The filtered excretory material is emptied into lateral longitudinal excretory canals extending the whole length of the body and thrown out through excretory pore at the end of the body.
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