Physiology Ascending pain pathway is inhibited in dorsal midbrain by encephalin anda) 5-HT (serotonin)b) Noradrenalinec) Substance Pd) Glutamatee) Adenosine A ac B a C ab D bc 💡 Explanation Ascending pain pathway is inhibited in dorsal midbrain by encephalin anda) 5-HT (serotonin)b) Noradrenalinec) Substance Pd) Glutamatee) Adenosine ✓ Correct Answer: C. ab