51. Macrophages A. derived from basophils. B. reduce the inflammatory : 1380550.
51. Macrophages
A. are derived from basophils.
B. reduce the inflammatory response.
C. are responsible for most phagocytic activity in the late stages of an infection.
D. produce cytokines that aid in the destruction of antigens.
E. are the first at the site of infection.
52. Histamine and leukotrienes are released from
A. basophils and mast cells.
B. eosinophils and basophils.
C. neutrophils and lymphocytes.
D. macrophages and microphages.
E. phagocytes.
53. In a patient experiencing a parasitic worm infection, which of the following immune cells will greatly increase in number?
A. mast cells
B. eosinophils
C. monocytes
D. neutrophils
E. basophils
54. Which of the following is usually the first cell type to leave the blood and enter infected tissues?
A. eosinophil
B. lymphocyte
C. monocyte
D. natural killer cell
E. neutrophil
55. Natural Killer (NK) cells
A. a type of macrophage.
B. are a type of plasma cell.
C. secrete enzymes that kill tumor or virus-infected cells.
D. are derived from B cells.
E. promote inflammation.
56. The inflammatory response
A. prevents the spread of an infection.
B. stimulates erythrocytes to leave the blood.
C. delays healing of damaged tissues.
D. depresses immunity.
E. is harmful and should be immediately reversed.
57. The redness and heat seen in an inflamed area are the result of
A. vasoconstriction.
B. increased blood flow to the area.
C. phagocyte mobilization.
D. production of interferon.
E. a reddish substance released by erythrocytes.
58. During the inflammatory response,
A. vasoconstriction occurs.
B. chemical mediators are released.
C. vascular permeability is decreased.
D. neutrophil production is depressed.
E. blood flow is reduced.
59. The key signs of inflammation include all of the following EXCEPT
A. jaundice.
B. pain.
C. swelling.
D. redness.
E. heat.
60. Which of the following substances causes increased capillary permeability, chemotaxis, and vasodilation?
A. histamine
B. protaglandins
C. leukotrienes
D. complement
E. cytokines
51. Macrophages A. derived from basophils. B. reduce the inflammatory : 1380550
