Miracidia hatches and sporocyst stage matures in snail before next larval stage or cercariae, which penetrate human skin and mature in bloodstream. The tapeworms are well known intestinal parasites of vertebrates. Tapeworms have no mouth or digestive tract, since absorb food directly through skin. Both male and female parts are present in each. Taeniarhynchus saginatus , the beef tapeworm .
Adults live in human small intestine.
Taenia solium , the pork tapeworm . In many ways, the pork tapeworm can be more deadly to a human host than the beef tapeworm. After a person eats infected pork, the larva passes through the stomach into the small intestine, everts the scolex, attaches, and starts to bud off proglottids. In the proglottids, the eggs are produced. The larvae start to develop in the eggs.