The difference in densities between adjacent areas on the radiograph is termed:
a. sharpness.
b. density.
c. resolution.
d. contrast.
d. Contrast refers to the many shades of gray that separate the dark and light areas.
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Blockage of the pulmonary arterial circulation to a portion of the lung would cause which of the following?
a. Decrease in anatomical dead space b. Decrease in physiologic dead space c. Increase in alveolar dead space d. Increase in anatomical dead space
The chest radiograph is often of little help in the diagnosis of nosocomial pneumonia in mechani-cally ventilated patients in the ICU because these individuals often have other reasons for radio-graphic abnormalities
Indicate whether the statement is true or false.
The division of the peripheral nervous system that governs the body's skeletal or voluntary muscles is the ________ nervous system.
Fill in the blank(s) with the appropriate word(s).
The components of a neuron that are short and branch profusely near the cell body are the
A. cell bodies. B. axons. C. dendrites. D. Schwann cells.