The active movement of white blood cells toward an infectious microbe is due to
A) substances released by mast cells.
B) the presence of cytokines.
C) by-products produced by the organism.
D) all of the above.
E) both B and C
D
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Which of the following best completes the statement: Wet-to-dry dressings __________?
A. impair wound healing by traumatizing healthy granulation tissue. B. facilitate wound healing by attracting macrophages. C. facilitate wound healing by allowing crust formation, which protects the wound bed from bacteria. D. impair wound healing because they are cytotoxic to living cells.
During the primary assessment of a geriatric patient complaining of shortness of breath and fever, you quickly locate the radial pulse. What should you do next?
A) Assess the patient's breathing B) Obtain a blood pressure C) Determine the rate and quality of the pulse D) Establish the patient's level of consciousness
When the patient ulnar-deviates for a PA axial, ulnar-deviated wrist projection, the
1. first metacarpal and radius are aligned. 2. distal scaphoid shifts anteriorly. 3. lunate is demonstrated distal to the radius. 4. distal scaphoid shifts posteriorly. a. 1 and 2 only b. 3 and 4 only c. 1, 3, and 4 only d. 1, 2, and 3 only
In the paralleling technique, the distance between the tooth and the image receptor is usually closer than ideal
Indicate whether the statement is true or false