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Tapeworm: Difference between revisions
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== Introduction == | == Introduction == | ||
Class Cestoda(paracitic flatworms), commonly known as tapeworms consists of long(6m or 20 ft.), soft-bodied, legless | Class Cestoda(paracitic flatworms), commonly known as the tapeworms consists of long(6m or 20 ft.), soft-bodied, legless invertebrates with bilateral symmetry. They have a primitive nervous system but have the characteristic of [[cephalization]](having all the sensory organs concentrated in the anterior or head region). They develope from three cell layers(from outside to inside): epidermis, mesoderm, and the gastroderm, with a thick tegument protecting them from the host's digestive jucies. Also they spend their entire adult life inside the small intestine of a vertebrate. They live in the small intestine because they have no digestive system of their own and thus must rely on absorbtion of already digested nutients.(Porch, pg455) They can cause infections in many vertebrates inluding fish, dogs, cats and humans.[http://www.merck.com/mmpe/sec14/ch184/ch184a.html] | ||
==Anatomy== | ==Anatomy== | ||
