This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gram-Positive Infections - Corynebacterial Infections, Subject name: Anatomy
[{'content': 'Articulation of pisiform bone is with: \nSelect and explain. \nA. Triquetral, B. Lunate, C. Scaphoid, D. Trapezoid', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. A TriquetralRef: BDC, 6th ed. vol. I pg. 25; Snell's 8th ed. pg. 402PISIFORM* It is a sesamoid bone in the tendon of flexor carpi uinaris.* Its dorsal surface presents a smooth, oval facet, for articulation with the triquetral* The palmar surface is rounded and rough, and gives attachment to the transverse carpal ligament, and to the Flexor carpi uinaris and Abductor digiti quinti.", 'role': 'assistant'}]