This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Adrenaline acts through \nSelect and explain. \nA. Single pass receptor, B. Four pass receptor, C. Seven pass receptor, D. Ligand gated channel', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Adrenaline, noradrenaline and dopamine acts via seven pass receptor or Serpentine receptor.', 'role': 'assistant'}]