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Patient Care Technician Certification (PCTC) Terminology Practice Test

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Which substance prevents sensation of pain?
Correct Answer:
Anesthetic
Explanation:
Anesthetics block the actual transmission of pain signals, either by numbing a specific area (local anesthetic) or by bringing about loss of consciousness for a procedure (general anesthetic). Because the nerve impulses that convey pain are interrupted, the brain doesn’t perceive pain during the procedure. Analgesics, by contrast, reduce pain perception after it has begun or lessen its intensity but don’t necessarily prevent the initial pain signals from being sent. Antibiotics treat infections, and anticoagulants prevent blood clotting.

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