Question:- A decrease in which of the following cells will lead to a parasitic infection? A. macrophage B. B cell C. T cell D. Natural killer cell please explain! i know that eosinophils fight parasites but which one could cause the parasitic infection if it decreased?
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Question:-
A decrease in which of the following cells will lead to a
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- please give me an answer that's not been posted yet. think about one of these organ system: cardiovascular, respiratory, lymphatics, integumentary. Within one of those systems, talk about the most troubling symptom a patient might have that would signal to you an infectious disease. So just one system and one symptom per person, I'm sure you will all come up with many different ones. For that symptom discuss why it is most troubling to you and how it might signify an infectious disease. You can also include examples of diseases that might fit with that symptom.Question 1: Select one answer.Sometimes the immune system appears to get confused and it starts mount an immune response against the the body's own tissues. What is this referred to as?a. Lymphomab. Lymphedemac. Autoimmune diseased. Graft-versus-host disease Question 2: Select one answer.One of the results of the inflammatory response is accumulation of fluid in the affected area (edema). This happens in response to tissue injury such as a sprained ankle or an infection caused by a splinter in one’s finger. Select the correct statement from the choices below. a. Activation of the inflammatory response does not indicate a disruption of homeostasis. Presence of extra fluid in the tissues directly activates the innate immune response. b.The lymph vessels will eventually drain away the excess fluid. The kinin-kallikrein system causes capillary leakage resulting in edema. c. The lymph vessels will bring in the cells from the immune system to fight any potential infection. d. Tissue edema…Which of the following is NOT a mechanism used by the immune system to fight multicellular parasites? Select one: a. Antibodies coating the pathogen surface bind to FcRs on mast cells, causing release of granule contents onto surface, and damage the parasite. b. Crosslinking of antibody binding to FceRI on eosinophils cells triggers release of granules, causing smooth muscle contractions. Muscle contractions in the mucosal tracts causes sneezing, coughing, vomiting or diarrhea, dislodging the parasite. d. The parasite is killed and broken down extracellularly, and then phagocytosed by macrophages. C.
- Hello, while doing my microbiology homework I wasn't able to understand how to answer these questions. Which kind of helper T cell response immune response (Th1 or Th2) has been shown to be more important in fighting HIV infection? Suggest one reason why that might be the case 2. Describe the typical drug regimen for treating AIDS. Name the class of drugs used and what are the targets of those drugs.The following events result in the destruction of a virus-infected body cell. Place them in the correct order and indicate which one would happen third. (Note: The third in sequence of the five answers listed, not necessarily the step that was numbered "3" in the textbook diagram) O Cytotoxic T Cell (TC) releases perforin Cytotoxic T Cell (TC) binds to infected cell Infected cell lyses Infected cell displays virus-directed antigens on its surface O Perforin damages infected cell membraneSome individuals with immunodeficiency have mutations in the digesting enzymes of their macrophages. What impact might this have on their immune systems? Question 8 options: The adaptive immune response may no longer be activated. Macrophage will no longer recognize the PAMPs with their TLRs. Macrophages will not release cytokines upon tissue damage. MHC receptors will present antigens on the surface of the macrophages.
- The following are steps in the cell-mediated inflammatory response. Put them in the correct order. 1. Activated macrophage cells release cytokines. 2. Antigen is engulfed and presented by a macrophage cell w/MHC II complex. 3. The TH1 cell's CD4 protein binds to the MHC II complex. 4. Phagocytosis and inflammation occur. 5. Th1 secrete TNF-alpha and other cytokines which activates the macrophage. A. 3, 4, 1, 2,5 В. 2, 3, 4, 5, 1 C. 3,5, 4, 1, 2 D. 2,3,5, 1, 4Figure 42.11 Which of the following statements about T cells is false? Helper T cells release cytokines while cytotoxic T cells kill the infected cell. Helper T cells are CD4+, while cytotoxic T cells are CD8+. MHC II is a receptor found on most body cells, while MHC I is a receptor found on immune cells only. The T cell receptor is found on both CD4+ and CD8+ T cells.Question:- Place these in the order in which they occur in the immune system. What order do these events relating to effector responses occur in? Activated B cells leave lymph nodes and move into bloodstream Activated B and T cells exit the blood stream at the site of infection Activated T cells leave lymph nodes and move into bloodstream Activated Tcytotoxic cells look for and kill infected self cells Antibodies bind directly to non-self microbes Antibodies help improve phagocytosis (‘opsonization’) Antibodies leak out of bloodstream at site of infection Antibodies secreted in lymph node travel through bloodstream Memory B and T cells patrol around the body looking to be activated by the same microbial substances that activated them in the first place.
- CHAPTER 20 The Lymphatic System and Immunity Matching SECTION 3 Revie w Match each lettered term with the most closely related description. a. opsonization 1 b. helper T cells Two parallel pairs of polypeptide chains Found on helper T cells C. antibody d. class II MHC 3 Active and passive 4 Transfer of antibodies e. costimulation Attacked by HIV f. IgM 6 Enhances phagocytosis g. class I MHC h. IgG 7 MHC proteins present in the plasma membranes of all nucleated cells i. passive immunity j. anaphylaxis 8 Differentiate into memory and plasma cells 9 MHC proteins present in the plasma membranes of all APCS and lymphocytes 9 k. CD4 markers 10 I. acquired immunity 10 Antibodies used to determine blood type 11 m. B lymphocytes 11 Secondary binding process required for T cell activation 12 12 Accounts for 80 percent of all immunoglobulins 13 13 Circulating allergen stimulates mast cells throughout body Match each lettered term with theA friend was recently diagnosed with strep throat. One week after his treatment, he redeveloped the infection. In conversation, your friend tells you, “I must have become immune to the drug the doctor gave me!” a. Discuss the validity of your friend’s statement, providing evidence in support of or refuting his claim. b. After further conversation, your friend tells you that he stopped taking his initial antibiotics after 2 days because he “felt 100% better.” Explain how this action might have played a role in the redevelopment of his infection. c. When he returned to his physician, she ordered a test to determine which antibiotic should be prescribed to treat his reinfection. Summarize a test that could be used to obtain this information.Consider the events that occur in HIV infection. I. HIV undergoes molecular self assembly.II. The protein gp120 binds to CD4.III. The HIV genome is incorporated into the host cell genome.IV. Reverse transcriptase is activated.V. The lipid envelope of HIV fuses with the T cell membrane. What is the correct sequence of the numbered events? I > III > V > IV > II IV > II > I > V > III II > V > IV > III > I III > I > II > IV > V
