Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Question
Chapter 15, Problem 11RA
Summary Introduction
To determine:
The properties of T lymphocytes.
Introduction:
T lymphocyte (thymic) is a type of lymphocyte that develops in the bone marrow from the stem cells and plays an important role in the cell-mediated immunity. T lymphocyte protects the body from diseases and helps to fight against cancer. These cells originate in the bone marrow but mature within the thymus.
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Students have asked these similar questions
Explain why each choice (a-d) is correct or incorrect.
Which statement is true about T cells?
a. They usually directly recognize antigens, which then activates a subpopulation of killer cells
b. Their proliferation is enhanced by interleukins 1 and 2.
c. Once activated, they cannot secrete cytokines.
d. They will develop into cytotoxic T cells if antigen is complexed with class II MHC proteins.
Which cells produce antibodies?
a. Neutrophils.
b. Dendritic cells.
c. Cytotoxic T cells.
d. Plasma cells.
The role of the humoral immune response is to
a. kill infected cellsb. fight pathogens found in body fluid
c. prevent pathogens from entering the body
d. initiate an inflammatory response
Which of these statements about gamma interferon is false? a. It is a polypeptide autocrine regulator. b. It can be produced in response to viral infections. c. It stimulates the immune system to attack infected cells and tumors. d.It is produced by almost all cells in the body.
Chapter 15 Solutions
Human Physiology
Ch. 15 - List the phagocytic cells found in blood and...Ch. 15 - Prob. 1bCPCh. 15 - Prob. 2aCPCh. 15 - Prob. 2bCPCh. 15 - Prob. 2cCPCh. 15 - Prob. 3CPCh. 15 - Prob. 4aCPCh. 15 - Prob. 4bCPCh. 15 - Prob. 5CPCh. 15 - Prob. 6aCP
Ch. 15 - Prob. 6bCPCh. 15 - Define the term histocompatibility antigens and...Ch. 15 - Prob. 7bCPCh. 15 - Prob. 8aCPCh. 15 - Prob. 8bCPCh. 15 - Prob. 8cCPCh. 15 - Prob. 8dCPCh. 15 - Prob. 9CPCh. 15 - Prob. 10aCPCh. 15 - Prob. 10bCPCh. 15 - Prob. 10cCPCh. 15 - Prob. 11CPCh. 15 - Prob. 12aCPCh. 15 - Prob. 12bCPCh. 15 - Which of these offers a nonspecific defense...Ch. 15 - Prob. 2RACh. 15 - Prob. 3RACh. 15 - Prob. 4RACh. 15 - Prob. 5RACh. 15 - Prob. 6RACh. 15 - Prob. 7RACh. 15 - Mast cell secretion during an immediate...Ch. 15 - Prob. 9RACh. 15 - Which of these cell types aids the activation of T...Ch. 15 - Prob. 11RACh. 15 - Delayed hypersensitivity is mediated by...Ch. 15 - Active immunity may be produced by...Ch. 15 - Which of these statements about class-2 MHC...Ch. 15 - Prob. 15RACh. 15 - Prob. 16RACh. 15 - Prob. 17RACh. 15 - Which of these statements about gamma interferon...Ch. 15 - Explain how antibodies help to destroy invading...Ch. 15 - Identify the different types of interferons and...Ch. 15 - Distinguish between the class-I and class-2 MHC...Ch. 15 - Prob. 22RACh. 15 - Prob. 23RACh. 15 - Describe how plasma cells attack antigens and how...Ch. 15 - Explain how tolerance to self-antigens may be...Ch. 15 - Use the clonal selection theory to explain how...Ch. 15 - Prob. 27RACh. 15 - Distinguish between immediate and delayed...Ch. 15 - Describe regulatory T lymphocytes and their...Ch. 15 - Prob. 30RACh. 15 - The specific T lymphocyte immune response is...Ch. 15 - Lizards are cold-blooded; their body temperature...Ch. 15 - Why are antibodies composed of different chains,...Ch. 15 - As a scientist trying to cure allergy, you are...Ch. 15 - The part of the placenta that invades the mother's...Ch. 15 - Describe the antigen-dependent and...Ch. 15 - People with peanut allergies could go into...Ch. 15 - Identify some immunologically privileged sites in...Ch. 15 - Use figure 15.6 to answer the following questions...Ch. 15 - Use figure 15.6 to answer the following questions...Ch. 15 - Prob. 41RACh. 15 - Prob. 42RA
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Similar questions
- Which event happens first during cytotoxic T-cell activation? a. Cytotoxic T cells secrete perforin and granzyme. b. Cytotoxic T cells recognize foreign antigen presented on the surface of a MHC I molecule. c. Cytotoxic T cells proliferate to form many new cells specific for the same antigen d. Cytotoxic T cells recognize foreign antigen presented on the surface of a TCR.arrow_forwardSuppose a person recovers normally from viral infections, but then gets the same viral infections over and over again- unlike the rest of us. A. What is probably wrong –B cells, helper T cells and/or cytotoxic T cells? B. Should this person be at a higher risk of cancer than the rest of us? C. Should this person be able to lyse bacterial cells as well as the rest of us? D. Should this person tolerate a graft (from an unreated person) better than you are me?arrow_forwardWhich type of T cell is most effective against viruses? a. Th1 b. Th2 C. cytotoxic T cells d. regulatory T cellsarrow_forward
- How is the cytotoxic T cell mechanism of action similar to that of complement? A. Cytotoxic T cells secrete the proteins that activate complement. В. Cytotoxic T cells induce cell lysis with perforin, a protein similar to complement's MAC. C. Cytotoxic T cells activate B cells to produce antibodies. D. Cytotoxic T cells are antigen-presenting cells similar to the complement proteins found on B cells.arrow_forwardExplain why each choice (a-d) is correct or incorrect. T cells are differentiated into two groups based on their glycoproteins CD4 or CD8. Which of the following is true of CD4 T cells? a. They become cytotoxic T cells. b. The become antigen presenting cells. c. They become T helper cells. d. They become plasma cells.arrow_forwardWhich of the following statements about T cells is false? a. Helper T cells release cytokines while cytotoxic T cells kill the infected cell. b. Helper T cells are CD4+, while cytotoxic T cells are CD8+. c. MHC II is a receptor found on most body cells, while MHC I is a receptor found on immune cells only. d. The T cell receptor is found on both CD4+ and CD8+ T cells.arrow_forward
- Which immune cells circulate in the body, providing immunity by producing antibodies? A. T-cells, B. Antigens, C. B-cells, D. Lymph Nodesarrow_forwardThe immune system includes the various responses the body uses to ensure survival in the presence of disease-causing agents. Identify the example of innate immunity. A. Infected host cells are killed by toxic proteins from cytotoxic T cells. B. Toll-like receptors bind to foreign molecule fragments to initiate immune response. C. CD4 accessory proteins on the helper T cell surface bind to class II MHC molecules. D. IgE antibodies recognize and attach to pollen grains, stimulating an allergic reaction.arrow_forwardWhy must antibody treatments like ZMapp be composed of monoclonal antibodies instead of polyclonal antibodies? a. Therapeutic antibodies must all bind the same epitope. b. Therapeutic antibodies must NOT all bind the same epitope. c. Monoclonal antibodies have much higher binding affinity than polyclonal antibodies. d. Monoclonal antibodies have much lower binding affinity than polyclonal antibodies. e. Monoclonal antibodies can be produced indefinitely; polyclonal antibodies can only be produced for a short time. IS it B? Can you please explainarrow_forward
- Which of the following statements about interferons is false? Select one: O a. Interferons produced by a virus-infected cell will not save that cell from destruction. b. Interferons produced by virus-infected rabbit cells cannot be used to treat viral diseases in humans. c. Interferons are virus specific. d. Interferons have been used to treat hepatitis C and certain types of cancer.arrow_forwardWhich statement is incorrect?a. IgG is the most abundant antibody in bloodb. Antibodies can exist at the surface of a B cell, or circulate freely in blood.c. IgM is found in the lining of the genitourinary, gastrointestinal and respiratory tractsd. IgE is involved allergic reactionse. Macrophages are involved in chronic infectionsarrow_forwardWhich of the following is not correct concerning interferon?a. Interferon is a protective protein.b. Virus-infected cells produce interferon.c. Interferon has no effect on viruses.d. Interferon can be used to treat certain viral infections.arrow_forward
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