UW-Madison BIOLOGY 151 - 151-3-DiscStretton3_Homework-Sp18 (2 pages)

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151-3-DiscStretton3_Homework-Sp18



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151-3-DiscStretton3_Homework-Sp18

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2
School:
University of Wisconsin, Madison
Course:
Biology 151 - Introductory Biology
Introductory Biology Documents

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Intro Bio 151 153 Discussion homework for the week of April 23rd INSTRUCTIONS Print this homework and complete it before going to your discussion section Believe us there is a lot to go over this upcoming week in discussion and you will have a greater chance of getting through it if you really take this homework seriously 1 What general or innate defense mechanisms does the body use to help prevent infection by pathogens For example what defense mechanisms are involved in local inflammatory responses What are some of the other players in innate immunity I can think of at least 4 from lecture How does the body use these defenses Epithelial Surfaces Help Prevent Infection Human Cells Recognize Conserved Features of Pathogens Complement Activation Targets Pathogens for Phagocytosis or Lysis Toll like Proteins Are an Ancient Family of Pattern Recognition Receptors The interior epithelial surfaces are also covered with a mucus layer that protects these surfaces against microbial mechanical and chemical insults many amphibians and fish also have a mucus layer covering their skin The slimy mucus coating is made primarily of secreted mucin and other glycoproteins and it physically helps prevent pathogens from adhering to the epithelium Skin saliva 2 Review your class notes and also watch the subtitled animations via the links given below Take note of the different players in the immune system and what they do T cells cytotoxic and helper B cells antibodies antigens etc as well as how the whole process works After watching these answer the following questions Please note that these animations are simplified models As such they can omit some important details e g they may show processed antigens moving through the cytoplasm of a cell when in reality they would be moving through the cell within a vesicle Antigenic Determinants Epitopes http highered mheducation com sites 0072507470 student view0 chapter22 animation antigenic determinants e pitopes html Antigen Processing http



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