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The following are the stages in the development of cystic acne. Place them in order and indicate which one would happen fourth (fourth among the steps listed here, not necessarily a step that was numbered "4" in a textbook or slide figure) Sebum channels become blocked Pustules form and damage the dermis Propionibacterium acnes grows on sebum, forms free fatty acids that cause inflammation Neutrophils attracted, secrete enzymes damaging follicle wall Scar tissue forms

The following are the stages in the development of cystic acne. Place them in order and indicate which one would happen fourth (fourth among the steps listed here, not necessarily a step that was numbered "4" in a textbook or slide figure) Sebum channels become blocked Pustules form and damage the dermis Propionibacterium acnes grows on sebum, forms free fatty acids that cause inflammation Neutrophils attracted, secrete enzymes damaging follicle wall Scar tissue forms

Human Anatomy & Physiology (11th Edition)
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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The following are the stages in the development of cystic acne. Place them in order and indicate which one would happen fourth (fourth among the steps listed here, not necessarily a step that was numbered "4" in a textbook or slide figure) Sebum channels become blocked Pustules form and damage the dermis Propionibacterium acnes grows on sebum, forms free fatty acids that cause inflammation Neutrophils attracted, secrete enzymes damaging follicle wall Scar tissue forms
Transcribed Image Text:The following are the stages in the development of cystic acne. Place them in order and indicate which one would happen fourth (fourth among the steps listed here, not necessarily a step that was numbered "4" in a textbook or slide figure) Sebum channels become blocked Pustules form and damage the dermis Propionibacterium acnes grows on sebum, forms free fatty acids that cause inflammation Neutrophils attracted, secrete enzymes damaging follicle wall Scar tissue forms
Based on the figure below and information presented in class which of the following is NOT true about HIV and Acquired Immunodeficiency Syndrome? CD4 T cell blood concentration (cells/mm³) 1200 1100 1000 900 800 700 600 500 400 300 200 100 Category A: Asymptomatic or chronic lymphadenopathy 1 1-2 months following initial infection, the population of HIV in blood peaks at about 10,000,000/ml. 3 Seroconversion. HF 1-2 months 2 1-2 months following initial infection, population of CD4 T cells plunges. Antibodies against HIV appear. HIV population blood crashes. -HIV population in blood 1 HIV in blood stabilizes at steady state of 1000 to 10,000/ml. Category B: Symptomatic. Early indications of immune failure 4 5 CD4 T cell population. declines steadily. Category C: AIDS indicator conditions (Darker color below line indicates viral load in lymphatic tissue.) 5 Years Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings. 12 7 Clinical AIDS: CD4 T cell population 200/mm³. 11 6 Huge but indefinite numbers of HIV in lymphoid tissue, in latent or proviral form (see Figure 19.13). At least 6 100 billion HIV generated each day for years, mostly by infected T cells. 10 9 8 8 Rise of HIV in blood 3 as immune system breaks down. 10 HIV-infected people cannot transmit HIV to other people until after they develop AIDS After about the first year of infection, the amount of HIV/RNA in blood plasma remains fairly constant until the onset of AIDS Following initial infection, an immunological response against HIV occurs, but it does not stop the progression of disease HIV is present in latent or proviral form throughout lymphoid tissues, as well as in the blood and other body fluids None of the other four answers (All are true statements)
Transcribed Image Text:Based on the figure below and information presented in class which of the following is NOT true about HIV and Acquired Immunodeficiency Syndrome? CD4 T cell blood concentration (cells/mm³) 1200 1100 1000 900 800 700 600 500 400 300 200 100 Category A: Asymptomatic or chronic lymphadenopathy 1 1-2 months following initial infection, the population of HIV in blood peaks at about 10,000,000/ml. 3 Seroconversion. HF 1-2 months 2 1-2 months following initial infection, population of CD4 T cells plunges. Antibodies against HIV appear. HIV population blood crashes. -HIV population in blood 1 HIV in blood stabilizes at steady state of 1000 to 10,000/ml. Category B: Symptomatic. Early indications of immune failure 4 5 CD4 T cell population. declines steadily. Category C: AIDS indicator conditions (Darker color below line indicates viral load in lymphatic tissue.) 5 Years Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings. 12 7 Clinical AIDS: CD4 T cell population 200/mm³. 11 6 Huge but indefinite numbers of HIV in lymphoid tissue, in latent or proviral form (see Figure 19.13). At least 6 100 billion HIV generated each day for years, mostly by infected T cells. 10 9 8 8 Rise of HIV in blood 3 as immune system breaks down. 10 HIV-infected people cannot transmit HIV to other people until after they develop AIDS After about the first year of infection, the amount of HIV/RNA in blood plasma remains fairly constant until the onset of AIDS Following initial infection, an immunological response against HIV occurs, but it does not stop the progression of disease HIV is present in latent or proviral form throughout lymphoid tissues, as well as in the blood and other body fluids None of the other four answers (All are true statements)
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