This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Longest muscle in the body \nSelect and explain. \nA. Biceps, B. Triceps, C. Saorius, D. Quadriceps', 'role': 'user'}, {'content': 'Answer: C \nExplanation: REF BD CHAURASIAS HUMAN ANATOMY SIXTH EDITION VOLUME 2 PAGE 53 Saorius is long narrow and ribbon like it run downwards and medially across the front of thigh .it is the longest muscle in the body. It orgin :anterior superior iliac spine Ipper half of notch below spine Inseion: medial surface of shaft of tibia upper pa', 'role': 'assistant'}]