HESI A2 Practice Questions A+ Grade
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HESI A2 Practice Questions Questions 1 to 4 pertain to the following passage: Protozoa are microscopic, one-celled organisms that can be free-living or parasitic in nature. They are able to multipl... y in humans, a factor which contributes to their survival and also permits serious infections to develop from just a single organism. Transmission of protozoa that live in the human intestine to another human typically occurs by a fecaloral route (for example, contaminated food or water, or person-to-person contact). Protozoa that thrive in the blood or tissue of humans are transmitted to their human hosts by an arthropod vector (for example, through the bite of a mosquito or sand fly). Helminths are large, multicellular organisms that are generally visible to the naked eye in their adult stages. Like protozoa, helminths can be either free-living or parasitic in nature. In their adult form, helminths cannot multiply in humans. There are three main groups of helminths (derived from the Greek word for worms) that are human parasites: Flatworms (platyhelminths) – these include the trematodes (flukes) and cestodes (tapeworms) [Show More]
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