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How would damage to the ciliated cells of the respiratory tract predispose a person to infection?
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- What is the role of histamine in inflammation? A)Histamine increases the volume of blood flow in the area of the infection. B)All these choices are correct. C)Histamine signals to neutrophils to migrate to the site of infection. D)Histamine makes it easier for neutrophils to move from the bloodstream to the site of infection.Which of the following is not a part of the inflammation process? a) Intracellular gaps in vessels that allow passage of large proteins Ob) Dilation of vessels c) Increased permeability of vessels d) Contraction of vascular smooth muscle e) Increased blood flowWhat is the role of the dendritic cell in infection by HIV?
- Two periods of acute disease are the periods of illness and period of decline. (a) In what way are both of these periods similar? (b) In terms of quantity of pathogen, in what way are these periods different? (c) What initiates the period of decline?what is cold, pneumonia or the flu? Explain the differences.Thomas rides in an elevator with a young child suffering from the common cold. Like most young children, the sick girl fails to cover her mouth when she sneezes thus releasing cold viruses (Rhinoviruses) into the air of the elevator. Thomas has the misfortune of inhaling one of those viruses. These questions follow step-wise as Thomas’ immune system attempts to prevent the infection. 1)Identify three physical barriers in Thomas' nasal cavity that attempt to prevent infection by the virus. The dastardly virus sneaks past those barriers and enters a nasal mucosa cell. The virus hijacks the transcription machinery of the cell to produce more virus particles. These particles then infect neighboring cells. 2) [_______] is a proteinaceous component of the innate immune system that interferes with the infection of neighboring cells with virus particles. 3) Some of the infected cells are phagocytosed. Phagocytes present antigens from the infected cell on the cell surface bound to a…