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: Pharmacology
[{'content': 'Action of adrenaline on which of the following receptor is not required in the treatment of analphylactic shock \nSelect and explain. \nA. α1, B. α2, C. β1, D. β2', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Action of adrenaline is necessary on:\nα1 Receptors: To increase diastolic BP by vasoconstriction.\nβ1 receptors: To increase systolic BP by Cardiac stimulation.\nβ2 receptors: To cause bronchodilation & relieve\xa0bronchospasm.', 'role': 'assistant'}]