NESTER'S MICROBIOLOGY-ACCESS
9th Edition
ISBN: 9781260518498
Author: Anderson
Publisher: MCG
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Chapter 17, Problem 3SA
What are the major differences between an IgE-mediated skin reaction, such as hives, and a delayed-type hypersensitivity reaction, such as rejection of transplanted tissue?
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What are the major differences between an IgE-mediated skin reaction, such as hives, and a delayed-type hypersensitivity reaction, such as a positive tuberculin skin test?
What are the types of hypersensitivity? Explain with an example.
i) True or False : Antibodies attach firmly to an antigenic determinant called an epitope.ii) True or False: Band T-cells are the components of the adaptive immune system.iii) True or False: Swelling, redness, and pain of the injured part are due to inflammation of the injured tissue.iv) True or False: Insertion of complement proteins C7, C8, and C9 into the cell membrane of the pathogen is due to the Amphipathic nature of these proteins.v) True or False: During inflammation cells from the adaptive immune systems are mainly recruited towards the site of infection.vi) True or False: Cytokines are released by Macrophages for the killing of the Ag directly.vii) True or False: Macrophages always mature into monocytes at the site of infection.viii) True or False: All components of the Complement systems remain active in the body all the time.ix) True or False: All the factors of the complement system remain active except factor-D due to its substrate specificity for factor-B, bound to…
Chapter 17 Solutions
NESTER'S MICROBIOLOGY-ACCESS
Ch. 17 - Prob. 1SACh. 17 -
2. List two physical responses of systemic...Ch. 17 - What are the major differences between an...Ch. 17 - Compare and contrast the Arthus reaction and serum...Ch. 17 - Prob. 5SACh. 17 - Compare and contrast the autoimmune processes...Ch. 17 -
7. Give an example of an organ-specific...Ch. 17 - Explain why a patient who received a successful...Ch. 17 - Why does an IgA deficiency predispose a person to...Ch. 17 - What is the difference between a primary...
Ch. 17 - Prob. 1MCCh. 17 - Prob. 2MCCh. 17 - Prob. 3MCCh. 17 - Prob. 4MCCh. 17 - Delayed-type hypersensitivity reactions in the...Ch. 17 - Prob. 6MCCh. 17 - Prob. 7MCCh. 17 - Prob. 8MCCh. 17 - Prob. 9MCCh. 17 - Prob. 10MCCh. 17 - Jack and Jill were badly burned in an accident at...Ch. 17 - Horse serum containing specific antibody to snake...Ch. 17 - Hypersensitivity reactions, by definition, lead to...Ch. 17 - Prob. 2CT
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- Aside from the time required for a reaction to appear,how does delayed hypersensitivity differ from the acuteand subacute types?arrow_forward1) According to the video, what is another name for the innate immune sys and what does this system do? 2) According to the video, what causes inflammation and what cells cause it? 3) According to the video, what happens to neutrophils after they consume a pathogen? 4) According to the video, natural killer cells; what do they do? 5) The adaptive/acquired immune system can tell the difference between types of pathogens: true or false? 6) According to the video, helper t- function: 7) According to the video, cytotoxic t cells function: 8) According to the video, memory cells function:arrow_forwardThe circulating cytokines that recruit large numbers of phagocytes to the area of inflammation, resulting in pus, are called: O1) pyogens O 2) pyrogens 3) interferons O 4) defensinsarrow_forward
- How can C3b be both a product of complement activation and an activator of the complement system?arrow_forwardBoth antibodies and particular complement proteins, such as c3b, are capable of aiding phagocytes in attaching to bacteria. What term best describes these? O 1) opsonins O 2) haptens O 3) pyogens O 4) perforinsarrow_forwardWhat is the mechanism of type II hypersensitivity?arrow_forward
- Delayed-type hypersensitivity reactions in the skina) are characterized by a wheal and flare reaction.b) peak at 4 to 6 hours after exposure to antigen.c) require complement activation.d) show induration because of the influx of sensitized T cells and macrophages.e) depend on activities of the Fc portion of antibodies.arrow_forwardInnate lymphoid cells reside primarily in tissues such as the lungs, the lining of the gastrointestinal tract, and the skin, because these sites represent the major routes of entry of pathogens into the body. Several different subsets of innate lymphoid cells exist, and each is specialized to respond to a category of pathogen (e.g., viruses, extracellular bacteria, helminthic parasites, etc). a) True b) Falsearrow_forwardWhat is the difference between innate immunity and adaptive immunity?arrow_forward
- Draw a figure illustrating the sequence of events in a typical inflammatory response to a bacterial infection caused by injury to the skin (in 3 main stages). Include a note at top of figure: Is this an example of an innate response or adaptive immune response? Include the following structures/cells/chemicals: epidermis, dermis, splinter contaminated with bacteria puncturing skin, macrophages, mast cells, neutrophils, nitric oxide (as blue dots), endothelial cells lining capillary, red blood cells within capillary, histamine (as green dots). Under each stage, describe the events occurring in the 3 main stages: Stage 1: What do mast cells and endothelial cells produce in initial response to injury? What do the chemicals produced by the cells do? Stage 2: What happens to capillaries? What leaks out of capillaries to enter the site of the wound? Stage 3: What do neutrophils and macrophages do? What happens to capillaries at this point?arrow_forwardWhat is the difference between humoral and cellular adaptive immunity?arrow_forwardThe classical complement pathway involves activation of the complement proteins in which of the following manners? 1) C3b binds to the microbial surface, with factors B, D, and P 2) C1 binds to antibodies bound to the microbe's surface 3) Fungal mannose sugars trigger complement proteins in the blood 4) C3b binds to antibodies bound to the microbial surfacearrow_forward
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