BIO 014F Study Guide - Quiz Guide: African Trypanosomiasis, Chagas Disease, Abdominal Pain
26 Nov 2018
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Exam 1 review histo= tissue lytica= to dissolve. It enters the body in contaminated water or food containing cysts that are resistant to the acids of gastric fluids. Approximately 40,000 die due to amebic colitis. Impact on humans- ectopic lesions, bloody diarrhea, weight loss, fatigue, abdominal pain, and ameboma. First stage- fever, headaches, joint pains and itching. Second stage- changes of behaviour, confusion, sensory disturbances, disturbances in sleep cycle and poor coordination. Impacts on humans: itchiness, swelling, diarrhea, stomach or abdominal cramps, dehydration (loss of fluids) If scientist put a sample of cat urine on a table: normal mice- will run away, infected mice- will move toward the scent, fearlessly. How does the parasite impact the behavior of mice: travels to brain and forms cysts, which create dopamine, in rodents, it causes altered behaviors that increase the line of transmission to definitive hosts. Problem- parasites develop a resistance to vaccines (due to mutations)
