A radiograph with few shades of gray exhibits
a. low contrast.
b. high contrast.
c. medium contrast.
d. long scale contrast.
b. high contrast.
Health Professions
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Which of the following best describes how x-rays are actually produced in the dental x-ray tube?
A) Radioactive particulate matter undergoes controlled disintegration. B) Electrical current passes through an oil mixture, creating minute explosions. C) Low milliamperage current is transformed to high kilovoltage current. D) High-speed electrons collide with target material electrons.
Health Professions
When stimulated, which of the following receptors causes bronchoconstriction?
a. M3 b. M2 c. ?1 d. ?2
Health Professions