This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
Neostigmine differs from Pilocarpine in having effects on 
Select and explain. 
A. Bowel motility, B. Hea rate, C. Salivary glands, D. Skeletal muscle
D: Skeletal muscle
Answer: D: Skeletal muscle 
Explanation: Pilocarpine is a muscarinic receptor agonist so it doesn't have effects on skeletal muscle (NM). Neostigmine, on the other hand, has indirect actions on both muscarinic and nicotinic receptors.Ref: Katzung Pharmacology; 13th edition