1. In central tolerance, 3 mechanisms deviate B cells away from making autoreactive antibody. Which is not one of the three mechanisms? a. Return to a non-differentiated stem cell to initiate B cell differentiation again b. Receptor editing away from self-reactivity c. Apoptosis caused by multivalent self-antigen d. Anergy caused by monovalent self-antigen 2. By the age of 50 and greater, about how much of your thymus is nonfunctional? a. 10% b. 40% C. 60% d. 95% 3. Tuberculoid leprosy is associated with a Th1 response and unchecked bacterial growth, whereas lepromatous leprosy is associated with a Th2 responses and suppression of

1. In central tolerance, 3 mechanisms deviate B cells away from making autoreactive antibody. Which is not one of the three mechanisms? a. Return to a non-differentiated stem cell to initiate B cell differentiation again b. Receptor editing away from self-reactivity c. Apoptosis caused by multivalent self-antigen d. Anergy caused by monovalent self-antigen 2. By the age of 50 and greater, about how much of your thymus is nonfunctional? a. 10% b. 40% C. 60% d. 95% 3. Tuberculoid leprosy is associated with a Th1 response and unchecked bacterial growth, whereas lepromatous leprosy is associated with a Th2 responses and suppression of

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Type I (immediate) hypersensitivity A. is mediated by IgE B. is mediated by T lymphocytes C. both is mediated by IgE and involves degranulation of mast cells D. involves degranulation of mast cells
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1. Sensitization occurs when A. the body produces an T cell response to an innocuous substance B. a person has an allergic response to a substance C. the body produces IgE in response to an innocuous substance D. IgE binds to mast cells 2. Match the sensitivity reaction with and an example of it. Type I Type III Type IV Type II A. Eczema B. Reaction resulting from administrating of drugs C. Serum sickness D. Poison ivy 3. Allergic rhinitis results in all of the following except: A. bacterial infections B. conjunctivitis C. asthma D. blocked sinuses
5. A patient receives a donor kidney to replace diseased kidney tissue. Consider and answer the following: B) list two similarities and two differences between response mechanisms of natural killer cells and cytotoxic T cells to the tissue graft in the absence of immune suppression.
can ensure that a great diversity of receptors can be generated on the surface of B cells. 單選: A. Rearrangement of B cell receptor genes B. Alternative splicing C. Antibody class switching D. Affinity maturation E. Somatic hypermutation O O O O O
8. Helper T cells that respond to extracellular pathogens by activating B cells are called A. antigen-presenting cells. B. cytotoxic T cells. C. Th0 cells. D. Th1 cells. E. Th2 cells.
19. The following event does not occur in the germinal centers of activated B cells? A. somatic hypermutation. B. formation of memory B cells C. RNA recombination D. plasma cell formation 20. Features of T-independent immune response include? A. occurs in people that lack a functional thymus C. give rise to memory cells. 21 Thafall E. class switching B. production of IgG and IgA D. involve immunological synapse
8. Match each term with the correct definition. Each term is only used once. Myeloid progenitors Lymphoid progenitors Monocytes Macrophages Eosinophils…