Approximately 70% of immune system cells are located inthe wall of the lower digestive tract (intestines). Can you suggest a reason for this phenomenon?
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Approximately 70% of immune system cells are located in
the wall of the lower digestive tract (intestines). Can you suggest a reason for this phenomenon?
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- Approximately 70% of the body’s immune system cells are located in or near the wall of the lower intestinal tract (intestines). Can you suggest a reason for this phenomenon?Some primitive organisms, such as invertebrates, have no lymphocytes and thus lack an adaptive immune system, but they have somecomponents of an innate immune system, including phagocytes andcertain protective proteins. What are some general features of innateimmunity that make it very valuable to organisms lacking more specific antibody- and cell-mediated responses? What are some disadvantages to having only an innate immune system?Briar Rose pricks her finger on a nasty - and rather dirty looking - wooden spindle, receiving a painful splinter. She decides to ignore the splinter and wrapsa bandage around her finger. The next day, Briar Rose had red streaks running up her right arm and they feel warm to the touch. A few days later she notices tender swollen bumps in her right armpit. What happened to her arm and armpit? Describe in terms of innate and adaptive immune mechanisms. Note: this is not the first time she has pricked her finger!
- that causes the rapid reproduction of a specific ( Select] [ Select ] Antigenic cell B cell I cell Macrophage Eosinophil Vaccines work by stimulating a(n) [Select ] that produces an antibody that is specific for the antigen in the vaccine. This creates a pool of memory cells that will be available if the person is ever infect nicrobe.All of the following general properties describe the adaptive immune response except? Self-tolerance Memory O Specificity O Immediate « PreviousSome Type-II immunopathology mediated autoimmune diseases have manifestations inmultiple different organs. Discuss how antibodies to one single antigen can cause damage inmultiple sites throughout the body. Things you might discuss include, but are not limited towhere the antigen could be expressed, how antibodies are made, how they bind antigen,where they circulate, the ratios of antigen to antibody, mechanisms of the immune systemthat result in cellular/tissue damage, or how immune system components can affect otherorgans. You might also comment on what makes one antigen an attractive target rather thananother. Please do NOT comment on all the things listed above, they are just to get youthinking. If you are having trouble getting started, it might help to think about a specificdisease which affects multiple organs.
- One beautiful warm day in June, you are on a picnic and are stung on your finger by a bee. Although it hurt a little, you are soon enjoying the early summer day. The next morning you wake up to fi nd that your finger is swollen, quite stiff, red, and warmer than the rest of your fi ngers. In addition, you seem to have a bit of a fever.a. Which parts of the immune system seem to be activated?b. Which classic responses to injury did you experience?c. Explain which cytokines and cell types were probably most responsible for manyof your symptoms.Immune system cells are produced in which of the following? O Thymus O Spleen O Liver Bone marrowAlthough the immune system has two arms, it has been said, “No T cells, no immunity.” How is this so?
- Compare the cells & moleculesthat produce Humoral Immunitywith those that produce Cell-Mediated Immunity. (Th, B, Tc, NK, PMN, MΦ; Ig, BCR, TCR, MHC, CK, IL)Influenza viruses mutate rapidly, whereas the chickenpox virus doesnot. Why are people encouraged to receive vaccinations againstinfluenza every year, whereas immunity to chickenpox lasts fordecades?Dead phagocytes are one component of pus. Why is pus a sure signof infection?