Which of the following statements about the uses of muscarinic receptor agonists is true?

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Multiple Choice

Which of the following statements about the uses of muscarinic receptor agonists is true?

Explanation:
Muscarinic receptor agonists activate parasympathetic pathways, leading to pupil constriction, accommodation, increased tear production, and enhanced outflow of aqueous humor in the eye. The true statement is that they decrease intraocular pressure because stimulation of the ciliary muscle opens the trabecular outflow pathway, boosting drainage of aqueous humor. This mechanism underlies glaucoma treatments like pilocarpine. In contrast, these agents do not dilate the pupil (that’s caused by antimuscarinic agents), they increase tear secretion rather than inhibit it, and they promote, not block, GI peristalsis.

Muscarinic receptor agonists activate parasympathetic pathways, leading to pupil constriction, accommodation, increased tear production, and enhanced outflow of aqueous humor in the eye. The true statement is that they decrease intraocular pressure because stimulation of the ciliary muscle opens the trabecular outflow pathway, boosting drainage of aqueous humor. This mechanism underlies glaucoma treatments like pilocarpine. In contrast, these agents do not dilate the pupil (that’s caused by antimuscarinic agents), they increase tear secretion rather than inhibit it, and they promote, not block, GI peristalsis.

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