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 structure forms the medial border of Hesselbach's triangle? \nSelect and explain. \nA. Linea alba, B. Linea semilunaris, C. Inferior epigastric aery, D. Conjoint tendon", 'role': 'user'}, {'content': "Answer: B \nExplanation: Boundaries of Hasselbach's triangle:Medial border: Lateral margin the rectus sheath, also called linea semilunaris.Superolateral border: Inferior epigastric aery.Inferior border: Inguinal ligament, sometimes Referred to as Poupa's ligament.", 'role': 'assistant'}]