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NURS 5315 TEST 2 ELSEVIER QUESTIONS
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NURS 5315 TEST 2 ELSEVIER QUESTIONS
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Chapter 7 Innate Immunity Questions1. 1.ID: 18662104380
Which of the following is an example of a physical barrier?
A. Antibacterial fatty acids
B. Lysozymes in tears
C. Epithelial cells Correct
Epithelial cells form tight junctions that are a physical barrier to entry for organisms.
Sebaceous glands in the skin secrete antibacterial and antifungal fatty acids. Earwax
and lysozymes in tears are examples of biochemical secretions that trap potential
disease-causing microorganisms.
D. Earwax
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2. 2.ID: 18662104374
Which statement is true regarding the inflammatory response?
A. Inflammatory response is the third line of defense.
B. Inflammatory response relies on cellular components only
C. Inflammatory response generates a nonspecific response. Correct
The inflammatory response is the second line of defense. It occurs at the site of
tissue injury and generates a nonspecific response that involves cellular and
chemical components. The inflammatory response occurs in tissues with a blood
supply (vascularized).
D. Inflammatory response occurs in nonvascular tissue.
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3. 3.ID: 18662104392
Which complement factor is considered an anaphylatoxin?
A. C3a Correct
C3a, C5a, and C4a are anaphylatoxins. They can induce the rapid degranulation of
mast cells and the release of histamine.
B. C1
C. C7
D. C9
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4. 4.ID: 18662104398
Which receptor is expressed on macrophages and facilitates recognition and
phagocytosis of bacterial pathogens?
A. Complement receptors
B. Scavenger receptors Correct
The scavenger receptors are primarily expressed on macrophages and facilitate
recognition and phagocytosis of bacterial pathogens. Complement receptors
recognize a variety of fragments produced through activation of the complement
system. Toll-like receptors are expressed on the surface of cells, including epithelial,
mast, neutrophils, macrophages, dendritic cells, and lymphocytes. They recognize
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