Pharmacology Increasing the concentration of norepinephrine in adrenergic synapses leads to A Activation of tyrosine hydroxylase B Activation of dopa decarboxylase C Increased release of norepinephrine D Activation of presynaptic Gi (C) coupled receptors 💡 Explanation Increasing the concentration of norepinephrine in adrenergic synapses leads to ✓ Correct Answer: D. Activation of presynaptic Gi (C) coupled receptors