Physiology Rate limiting step in cholinergic transmission ? A Synthesis of acetylcholine from choline B Active uptake of choline in axons C Active uptake of acetylcholine by synaptic vesicle D Release of acetylcholine from synaptic vesicle 💡 Explanation Rate limiting step in cholinergic transmission ? ✓ Correct Answer: B. Active uptake of choline in axons