Problem: 27 y/o patient presents to the clinic with a six-month history of sudden, recurrent episodes of intense fear, chest tightness, shortness of breath, dizziness, and a racing heart. She reports that these episodes, which she describes as "panic attacks," occur without warning and last about 10-20 minutes. During each episode, she fears she is having a heart attack or about to die. Afterward, she feels extremely anxious and exhausted. Symptoms of racing heart and shortness of breath are associated with which neurotransmitter system that is often overactive in panic disorder? Group of answer choices GABAergic system Noradrenergic system Serotonergic system Dopaminergic system. Need Assignment Help?