The layer of debris formed after dentin is cut with a bur is known as the ____________
a. smear layer
b. dentinal tubules
c. both a and b
d. neither a nor b
a
RATIONALE: The layer of debris formed after dentin is cut with a bur is known as the smear layer.
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A car has rolled several times and is on its roof. Closer inspection reveals the unrestrained driver lying in her back with the back portion of the roof collapsed. At this time, what instruction should you give first?
A) "Let's forcibly remove the back door." B) "We need to take the weight off of the posts." C) "Let's open the doors and use them for support." D) "We need to climb in to assess the patient."
A newborn's first APGAR score was 6. His second APGAR score is 9. This indicates which one of the following?
A) Improvement B) Need for extensive resuscitation C) Total score of 15 D) Poor heart and lung function
A TIA typically:
A) resolves within 24 hours. B) never resolves. C) can be reversible with tPA. D) is caused by intracranial hemorrhage.
If a patient is unresponsive, there is a high probability that there may also be an associated:
A) breathing problem. B) circulation problem. C) mental problem. D) airway problem.