Pharmacology GPCR that does not act through opening of potassium channels is? A Muscarinic M2 receptor B Dopamine D2 receptor C Serotonin 5 HT1 receptor D Angiotensin 1 receptor 💡 Explanation GPCR that does not act through opening of potassium channels is? ✓ Correct Answer: D. Angiotensin 1 receptor