Biology 1290B Chapter Notes - Chapter 19: Alveolate, Foraminifera, Archaeplastida
26 Feb 2018
School
Department
Course
Professor
Document Summary
Parasites: organisms that must live in or on a different species to get their nourishment and reproduce. Protozoa: motile, predatory/parasitic species that absorb or ingest food by infecting living organisms, encompass a variety of parasitic lifestyles. Many protistan diseases of the blood & nervous system can be life. The trypanosoma parasites can cause life-threatening systemic diseases: trypanosomiasis: general term for two diseases, (1) african trypanosomiasis (human sleeping sickness, transmitted by tsetse fly, chancre forms at bite site, parasites invade bloodstream, central nervous system. Helmniths: world"s most common animal parasites: flatworm: animals in the phylum platyhelminthes, live in marine & freshwater environments, damp soil, no specialized respiratory/circulatory structures, lack digestive tract. Roundworms: phylum nematoda, live in oceans, freshwater, soil from polar regions to tropics (every habitat on earth, damage in hosts caused by large worm burdens in blood vessels, lymphatic vessels, intestines.
