Parasites essays

Parasites essays Parasitic animals, such as tapeworms, can live inside of another organism with no harm. Organisms that live in guts has a specific surrounding that can pass through the acid of stomach with no harm. Organism, like the tapeworm, can regenerat, if the segment of the organism is ingested by another primary host, by attaching itself to the intestinal walls and resumes its growth by budding. When eggs are ingested, they hatch in the intestinal tract of an animal and release larval forms, which can help it to survive in poor conditions. Tapeworms do not have eyes, ears, noses, or appendages. They even lack a digestive system and circulatory system. They don't need to see, hear, smell, or move if they live in a nutrient bath in the host's intestine and don't need to seek or capture food. They don't require digestive or circulatory systems becuase their cells are in close contact with already digested food, water, and gases. Cool, moist conditions are most favourable for survival. F reezing is not likely to be severe enough in the field to kill a significant number of cysts. Parasites that live on the inside of the host's body are known as endoparasites and outside of body called ectoparasites. This distinction reflects adaptations made by the parasite to overcome certain barriers t parasitism. For example, when invaded by a parasite, a host often triggers an immune response, a cellular reaction that works to destroy the invader. Parasitic worms, like flatworm and roundworm, usually live in the intestines, lungs, liver, or othre internal organs of their hosts. These worms have developed adaptations that enable them to avoid the host's immune response, such as during a developmental stage when they are protected by a cyst wall or an outer surface thta constantly changes, thereby making it difficult for the host immune system to target the parasite for attack. Many ectoparasites have developed structures, such as suckers, hooks,...