National Dental Examining Board of Canada (NDEB) Practice Exam

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What property is associated with anticholinergics like atropine and methantheline?

  1. Increase in blood pressure

  2. Increase in saliva production

  3. Decrease in saliva production

  4. Decrease in body temperature

The correct answer is: Decrease in saliva production

Anticholinergics like atropine and methantheline are substances that block the activity of acetylcholine, a neurotransmitter involved in various bodily functions. Anticholinergics have several potential effects on the body, such as increasing heart rate and dilating pupils. However, the specific property that is most commonly associated with them is the decrease in saliva production, also known as xerostomia. This is because acetylcholine plays a crucial role in the production of saliva, and blocking its activity leads to a decrease in saliva production. The other options, such as increase in blood pressure, increase in saliva production, and decrease in body temperature, are not directly related to the action of anticholinergics and thus are incorrect. In some cases, anticholinergics may cause an increase in blood pressure, but this effect is not exclusive to these

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