This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: GIT 1, Subject name: Anatomy
[{'content': 'Largest lymphatic organ in the human body is \nSelect and explain. \nA. Liver, B. Spleen, C. Thymus, D. Kidney', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Spleen: - Largest lymphatic organ connected to blood vascular system. Acts as filter for blood Plays an impoant role in immune response of body Lies mainly in hypochondrium & paly in epigastrium Normally not palpable Supplied by splenic aery - the largest branch of celiac trunk Splenic vein is formed at hilum of spleen Splenic tissue has no lymphatics Sympathetic fibres are derived from celiac plexus Functions: - Phagocytosis Hemopoiesis Immune responses Storage of RBC.', 'role': 'assistant'}]