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: Anatomy
[{'content': 'Which of the following aery is a branch of the first pa of axillary aery? \nSelect and explain. \nA. Lateral thoracic aery, B. Superior thoracic aery, C. Subscapular aery, D. Thoracoacromial aery', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Superior thoracic aery is the only branch from the first pa of the axillary aery. The axillary aery is a continuation of the subclan aery and is divided into three pas. Branches from the second pa of the axillary aery are: Lateral thoracic aery Thoracoacromial aery Branches from the third pa of the axillary aery are: Subscapular aery Anterior circumflex humeral aery Posterior circumflex humeral aery', 'role': 'assistant'}]