There are how many types of white blood cells?
A. 4
B. 7
C. 5
D. 3
Answer: C
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Lymphocytes respond to the presence of cancer cells, foreign proteins, and invading:
A) lymphocytes B) antibodies C) pathogens D) antigens
Hurricanes are ____ weather systems that form in the ____, resulting in harsh, spinning winds accompanied by thunderstorms that move across the oceans and onto land.
A. high-pressure, tropics B. low-pressure, tropics C. high-pressure, arctic D. low-pressure, arctic
Which of the following is a characteristic of a socialized health insurance system?
a. Health care is financed through government-mandated contributions by employers and employees b. Health care is delivered by government-employed providers c. Both a and b d. Neither a nor b
Regarding the maintenance of the airway in an unconscious adult, which of the following is false?
a. insertion of an oropharyngeal airway helps keep the airway open b. the head tilt-chin lift maneuver should always be used to open the airway c. secretions should be suctioned from the mouth, as necessary d. inserting a rigid suction catheter beyond the tongue may cause gagging