Which word names a medicine whose purpose is to induce vomiting?
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A
Opiate
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B
Narcotic
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C
Emetic
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D
Prophylactic
An emetic is a pharmacological agent specifically designed to stimulate the vomiting reflex.
This is achieved through gastric irritation or central nervous system activation, inducing emesis.
A) Opiate
Opiates depress central nervous system activity to relieve pain and suppress physiological functions, including nausea/vomiting. Their antiemetic properties oppose emetic action; opiates inhibit rather than induce vomiting. These represent pharmacological opposites within autonomic regulation.
B) Narcotic
Narcotics broadly depress neural function to induce stupor or analgesia, generally suppressing rather than stimulating reflexes. While some narcotics may cause nausea as side effect, none are therapeutically designed to induce vomiting. This category lacks the targeted emetic mechanism defining the queried term.
C) Emetic
Emetic derives directly from Greek emetikos ("inclined to vomit"), designating agents that deliberately provoke emesis through gastric mucosa irritation (ipecac) or chemoreceptor trigger zone stimulation (apomorphine). Therapeutic applications include toxin elimination and diagnostic procedures, establishing emetic as the precise pharmacological classification for vomiting-inducing medicines.
D) Prophylactic
Prophylactics prevent disease onset through preemptive intervention (vaccines, antimicrobials). While emetics may serve prophylactic roles in toxin exposure, their mechanism, inducing vomiting, differs fundamentally from prevention. Prophylaxis blocks pathology; emesis expels existing substances, distinct therapeutic strategies.
Conclusion
Emetics constitute a specialized pharmacological class defined by their deliberate induction of vomiting through targeted physiological stimulation. Unlike opiates/narcotics (which suppress emesis) or prophylactics (which prevent disease), emetics uniquely serve expulsion functions, making them the precise term for medicines therapeutically designed to provoke vomiting for clinical purposes.
Topic Flashcards
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A medicine (like aspirin or ibuprofen) that relieves pain; a painkiller.
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A substance that counteracts a specific poison or the effects of a disease.
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A medically inert substance given to a control group or prescribed for its psychological benefit.
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Relating to the healing of disease; having a beneficial effect on health.
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Relieving pain or alleviating a problem without dealing with the underlying cause.