A PA chest projection with accurate positioning demonstrates
1. 10 or 11 posterior ribs above the diaphragm.
2. equal posterior rib length on both sides of the chest.
3. the manubrium superimposed by the fourth thoracic vertebra.
4. the scapulae outside the lung field.
a. 1, 2, and 4 only
b. 2 and 4 only
c. 1 and 3 only
d. 1, 2, 3, and 4
D
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A) 5y = 5x B) 5y = x + 5 C) y = 5x D) y = x + 5
A major source of folate is from:
A) milk B) carrots C) dark green leafy vegetables D) beef liver
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The patient's visual acuity is tested:
A) using a Snellen eye chart. B) from a specific distance. C) both A and B. D) only in schools.