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.
d. When the high-velocity electrons are stopped or slowed as they collide with the tungsten atoms in the target, the result is the production of general radiation (bremsstrahlung) and/or characteristic radiation.
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All of the following errors can impact the accuracy of phone messages except:
A) repeating the telephone number to the caller to verify correctness. B) the transposition of numbers. C) no address, name of caller, or return phone number. D) incorrect spelling of names or the use of initials to identify patients.
The minimum safe distance in predicting a safe area when considering a wall collapse is:
A) 33 percent of the wall height. B) 50 percent of the wall height. C) 66 percent of the wall height. D) 100 percent of the wall height.
The right ventricle peak systolic pressure is represented by _____ millimeters of mercury
a. 15 c. 80 b. 25 d. 120
The superior vena cava drains into the heart.
Answer the following statement true (T) or false (F)